Home / 20,407,499.71-28,162,349.92-11,240,142.46

Finding the Fourth Proportional to 20,407,499.71, 28,162,349.92 and 11,240,142.46

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Solution

The fourth proportional to 20,407,499.71, 28,162,349.92 and 11,240,142.46 is: 15,511,396.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,407,499.71 : 28,162,349.92 = 11,240,142.46 : x
  2. Step 2: Convert to fraction form
    20,407,499.71/28,162,349.92 = 11,240,142.46/x
  3. Step 3: Cross multiply
    20,407,499.71x = 28,162,349.92 × 11,240,142.46
  4. Step 4: Simplify right side
    20,407,499.71x = 316,548,825,109,169.62
  5. Step 5: Solve for x
    x = 316,548,825,109,169.62/20,407,499.71
  6. Step 6: Final answer
    x = 15,511,396.77

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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.