Home / 12,128,082.10-18,192,123.15-4,935,913.90

Finding the Fourth Proportional to 12,128,082.10, 18,192,123.15 and 4,935,913.90

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Solution

The fourth proportional to 12,128,082.10, 18,192,123.15 and 4,935,913.90 is: 7,403,870.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,128,082.10 : 18,192,123.15 = 4,935,913.90 : x
  2. Step 2: Convert to fraction form
    12,128,082.10/18,192,123.15 = 4,935,913.90/x
  3. Step 3: Cross multiply
    12,128,082.10x = 18,192,123.15 × 4,935,913.90
  4. Step 4: Simplify right side
    12,128,082.10x = 89,794,753,526,596.78
  5. Step 5: Solve for x
    x = 89,794,753,526,596.78/12,128,082.10
  6. Step 6: Final answer
    x = 7,403,870.85

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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.