Home / 20,680,010.51-28,538,414.50-11,387,558.43

Finding the Fourth Proportional to 20,680,010.51, 28,538,414.50 and 11,387,558.43

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Solution

The fourth proportional to 20,680,010.51, 28,538,414.50 and 11,387,558.43 is: 15,714,830.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,680,010.51 : 28,538,414.50 = 11,387,558.43 : x
  2. Step 2: Convert to fraction form
    20,680,010.51/28,538,414.50 = 11,387,558.43/x
  3. Step 3: Cross multiply
    20,680,010.51x = 28,538,414.50 × 11,387,558.43
  4. Step 4: Simplify right side
    20,680,010.51x = 324,982,862,627,188.38
  5. Step 5: Solve for x
    x = 324,982,862,627,188.38/20,680,010.51
  6. Step 6: Final answer
    x = 15,714,830.64

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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.