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Finding the Fourth Proportional to 16,372.80, 24,679.80 and 15,979.20

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Solution

The fourth proportional to 16,372.80, 24,679.80 and 15,979.20 is: 24,086.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,372.80 : 24,679.80 = 15,979.20 : x
  2. Step 2: Convert to fraction form
    16,372.80/24,679.80 = 15,979.20/x
  3. Step 3: Cross multiply
    16,372.80x = 24,679.80 × 15,979.20
  4. Step 4: Simplify right side
    16,372.80x = 394,363,460.16
  5. Step 5: Solve for x
    x = 394,363,460.16/16,372.80
  6. Step 6: Final answer
    x = 24,086.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.