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Finding the Fourth Proportional to 15,491.92, 23,261.56 and 13,658.48

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Solution

The fourth proportional to 15,491.92, 23,261.56 and 13,658.48 is: 20,508.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,491.92 : 23,261.56 = 13,658.48 : x
  2. Step 2: Convert to fraction form
    15,491.92/23,261.56 = 13,658.48/x
  3. Step 3: Cross multiply
    15,491.92x = 23,261.56 × 13,658.48
  4. Step 4: Simplify right side
    15,491.92x = 317,717,552.03
  5. Step 5: Solve for x
    x = 317,717,552.03/15,491.92
  6. Step 6: Final answer
    x = 20,508.60

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.