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Finding the Fourth Proportional to 15,581.64, 23,375.65 and 5,721.01

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Solution

The fourth proportional to 15,581.64, 23,375.65 and 5,721.01 is: 8,582.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,581.64 : 23,375.65 = 5,721.01 : x
  2. Step 2: Convert to fraction form
    15,581.64/23,375.65 = 5,721.01/x
  3. Step 3: Cross multiply
    15,581.64x = 23,375.65 × 5,721.01
  4. Step 4: Simplify right side
    15,581.64x = 133,732,327.41
  5. Step 5: Solve for x
    x = 133,732,327.41/15,581.64
  6. Step 6: Final answer
    x = 8,582.69

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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.