Home / 20,698,720,418.88-28,564,177,719.81-11,543,259,200.76

Finding the Fourth Proportional to 20,698,720,418.88, 28,564,177,719.81 and 11,543,259,200.76

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Solution

The fourth proportional to 20,698,720,418.88, 28,564,177,719.81 and 11,543,259,200.76 is: 15,929,666,211.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,698,720,418.88 : 28,564,177,719.81 = 11,543,259,200.76 : x
  2. Step 2: Convert to fraction form
    20,698,720,418.88/28,564,177,719.81 = 11,543,259,200.76/x
  3. Step 3: Cross multiply
    20,698,720,418.88x = 28,564,177,719.81 × 11,543,259,200.76
  4. Step 4: Simplify right side
    20,698,720,418.88x = 329,723,707,276,340,625,408
  5. Step 5: Solve for x
    x = 329,723,707,276,340,625,408/20,698,720,418.88
  6. Step 6: Final answer
    x = 15,929,666,211.42

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Double scale
Find fourth proportional to 20,698,720,419.88, 28,564,177,721.19 and 11,543,259,201.76
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.