Home / 21,811,508.40-32,788,121.40-18,693,721.20

Finding the Fourth Proportional to 21,811,508.40, 32,788,121.40 and 18,693,721.20

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Solution

The fourth proportional to 21,811,508.40, 32,788,121.40 and 18,693,721.20 is: 28,101,311.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,811,508.40 : 32,788,121.40 = 18,693,721.20 : x
  2. Step 2: Convert to fraction form
    21,811,508.40/32,788,121.40 = 18,693,721.20/x
  3. Step 3: Cross multiply
    21,811,508.40x = 32,788,121.40 × 18,693,721.20
  4. Step 4: Simplify right side
    21,811,508.40x = 612,932,000,123,353.62
  5. Step 5: Solve for x
    x = 612,932,000,123,353.62/21,811,508.40
  6. Step 6: Final answer
    x = 28,101,311.88

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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.