Home / 20,386,649.97-28,133,568.81-11,219,292.72

Finding the Fourth Proportional to 20,386,649.97, 28,133,568.81 and 11,219,292.72

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Solution

The fourth proportional to 20,386,649.97, 28,133,568.81 and 11,219,292.72 is: 15,482,619.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,386,649.97 : 28,133,568.81 = 11,219,292.72 : x
  2. Step 2: Convert to fraction form
    20,386,649.97/28,133,568.81 = 11,219,292.72/x
  3. Step 3: Cross multiply
    20,386,649.97x = 28,133,568.81 × 11,219,292.72
  4. Step 4: Simplify right side
    20,386,649.97x = 315,638,743,737,652.06
  5. Step 5: Solve for x
    x = 315,638,743,737,652.06/20,386,649.97
  6. Step 6: Final answer
    x = 15,482,619.47

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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.