Home / 20,718,747.38-31,080,957.28-7,068,228.72

Finding the Fourth Proportional to 20,718,747.38, 31,080,957.28 and 7,068,228.72

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Solution

The fourth proportional to 20,718,747.38, 31,080,957.28 and 7,068,228.72 is: 10,603,310.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,718,747.38 : 31,080,957.28 = 7,068,228.72 : x
  2. Step 2: Convert to fraction form
    20,718,747.38/31,080,957.28 = 7,068,228.72/x
  3. Step 3: Cross multiply
    20,718,747.38x = 31,080,957.28 × 7,068,228.72
  4. Step 4: Simplify right side
    20,718,747.38x = 219,687,314,891,589.09
  5. Step 5: Solve for x
    x = 219,687,314,891,589.09/20,718,747.38
  6. Step 6: Final answer
    x = 10,603,310.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.