Home / 28,721.13-43,084.78-12,082.85

Finding the Fourth Proportional to 28,721.13, 43,084.78 and 12,082.85

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Solution

The fourth proportional to 28,721.13, 43,084.78 and 12,082.85 is: 18,125.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,721.13 : 43,084.78 = 12,082.85 : x
  2. Step 2: Convert to fraction form
    28,721.13/43,084.78 = 12,082.85/x
  3. Step 3: Cross multiply
    28,721.13x = 43,084.78 × 12,082.85
  4. Step 4: Simplify right side
    28,721.13x = 520,587,011.53
  5. Step 5: Solve for x
    x = 520,587,011.53/28,721.13
  6. Step 6: Final answer
    x = 18,125.58

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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.