Home / 20,737.14-31,105.69-5,154.76

Finding the Fourth Proportional to 20,737.14, 31,105.69 and 5,154.76

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Solution

The fourth proportional to 20,737.14, 31,105.69 and 5,154.76 is: 7,732.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,737.14 : 31,105.69 = 5,154.76 : x
  2. Step 2: Convert to fraction form
    20,737.14/31,105.69 = 5,154.76/x
  3. Step 3: Cross multiply
    20,737.14x = 31,105.69 × 5,154.76
  4. Step 4: Simplify right side
    20,737.14x = 160,342,366.58
  5. Step 5: Solve for x
    x = 160,342,366.58/20,737.14
  6. Step 6: Final answer
    x = 7,732.14

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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.