Home / 28,740,082.72-43,109,718.03-13,378,780.62

Finding the Fourth Proportional to 28,740,082.72, 43,109,718.03 and 13,378,780.62

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Solution

The fourth proportional to 28,740,082.72, 43,109,718.03 and 13,378,780.62 is: 20,067,981.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,740,082.72 : 43,109,718.03 = 13,378,780.62 : x
  2. Step 2: Convert to fraction form
    28,740,082.72/43,109,718.03 = 13,378,780.62/x
  3. Step 3: Cross multiply
    28,740,082.72x = 43,109,718.03 × 13,378,780.62
  4. Step 4: Simplify right side
    28,740,082.72x = 576,755,459,931,326.88
  5. Step 5: Solve for x
    x = 576,755,459,931,326.88/28,740,082.72
  6. Step 6: Final answer
    x = 20,067,981.90

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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.