Home / 21,947,850-30,218,931.69-18,633,588.90

Finding the Fourth Proportional to 21,947,850, 30,218,931.69 and 18,633,588.90

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Solution

The fourth proportional to 21,947,850, 30,218,931.69 and 18,633,588.90 is: 25,655,686.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,947,850 : 30,218,931.69 = 18,633,588.90 : x
  2. Step 2: Convert to fraction form
    21,947,850/30,218,931.69 = 18,633,588.90/x
  3. Step 3: Cross multiply
    21,947,850x = 30,218,931.69 × 18,633,588.90
  4. Step 4: Simplify right side
    21,947,850x = 563,087,150,108,642.25
  5. Step 5: Solve for x
    x = 563,087,150,108,642.25/21,947,850
  6. Step 6: Final answer
    x = 25,655,686.10

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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.