Home / 20,409,760.40-28,165,470.89-11,242,403.15

Finding the Fourth Proportional to 20,409,760.40, 28,165,470.89 and 11,242,403.15

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Solution

The fourth proportional to 20,409,760.40, 28,165,470.89 and 11,242,403.15 is: 15,514,517.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,409,760.40 : 28,165,470.89 = 11,242,403.15 : x
  2. Step 2: Convert to fraction form
    20,409,760.40/28,165,470.89 = 11,242,403.15/x
  3. Step 3: Cross multiply
    20,409,760.40x = 28,165,470.89 × 11,242,403.15
  4. Step 4: Simplify right side
    20,409,760.40x = 316,647,578,457,929.94
  5. Step 5: Solve for x
    x = 316,647,578,457,929.94/20,409,760.40
  6. Step 6: Final answer
    x = 15,514,517.19

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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.