Home / 20,517,411.65-28,313,191.37-11,815,912.13

Finding the Fourth Proportional to 20,517,411.65, 28,313,191.37 and 11,815,912.13

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Solution

The fourth proportional to 20,517,411.65, 28,313,191.37 and 11,815,912.13 is: 16,305,476.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,517,411.65 : 28,313,191.37 = 11,815,912.13 : x
  2. Step 2: Convert to fraction form
    20,517,411.65/28,313,191.37 = 11,815,912.13/x
  3. Step 3: Cross multiply
    20,517,411.65x = 28,313,191.37 × 11,815,912.13
  4. Step 4: Simplify right side
    20,517,411.65x = 334,546,181,235,768.12
  5. Step 5: Solve for x
    x = 334,546,181,235,768.12/20,517,411.65
  6. Step 6: Final answer
    x = 16,305,476.88

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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.