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Finding the Fourth Proportional to 10,491.42, 15,737.16 and 4,251.54

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Solution

The fourth proportional to 10,491.42, 15,737.16 and 4,251.54 is: 6,377.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,491.42 : 15,737.16 = 4,251.54 : x
  2. Step 2: Convert to fraction form
    10,491.42/15,737.16 = 4,251.54/x
  3. Step 3: Cross multiply
    10,491.42x = 15,737.16 × 4,251.54
  4. Step 4: Simplify right side
    10,491.42x = 66,907,165.23
  5. Step 5: Solve for x
    x = 66,907,165.23/10,491.42
  6. Step 6: Final answer
    x = 6,377.32

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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.