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Finding the Fourth Proportional to 21,574.42, 32,372.16 and 15,374.68

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Solution

The fourth proportional to 21,574.42, 32,372.16 and 15,374.68 is: 23,069.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,574.42 : 32,372.16 = 15,374.68 : x
  2. Step 2: Convert to fraction form
    21,574.42/32,372.16 = 15,374.68/x
  3. Step 3: Cross multiply
    21,574.42x = 32,372.16 × 15,374.68
  4. Step 4: Simplify right side
    21,574.42x = 497,711,600.91
  5. Step 5: Solve for x
    x = 497,711,600.91/21,574.42
  6. Step 6: Final answer
    x = 23,069.52

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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.