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Finding the Fourth Proportional to 15,132.80, 22,691.90 and 5,271.86

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Solution

The fourth proportional to 15,132.80, 22,691.90 and 5,271.86 is: 7,905.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,132.80 : 22,691.90 = 5,271.86 : x
  2. Step 2: Convert to fraction form
    15,132.80/22,691.90 = 5,271.86/x
  3. Step 3: Cross multiply
    15,132.80x = 22,691.90 × 5,271.86
  4. Step 4: Simplify right side
    15,132.80x = 119,628,519.93
  5. Step 5: Solve for x
    x = 119,628,519.93/15,132.80
  6. Step 6: Final answer
    x = 7,905.25

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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.