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Finding the Fourth Proportional to 16,620.52, 24,915.39 and 8,721.40

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Solution

The fourth proportional to 16,620.52, 24,915.39 and 8,721.40 is: 13,074.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,620.52 : 24,915.39 = 8,721.40 : x
  2. Step 2: Convert to fraction form
    16,620.52/24,915.39 = 8,721.40/x
  3. Step 3: Cross multiply
    16,620.52x = 24,915.39 × 8,721.40
  4. Step 4: Simplify right side
    16,620.52x = 217,297,082.35
  5. Step 5: Solve for x
    x = 217,297,082.35/16,620.52
  6. Step 6: Final answer
    x = 13,074.02

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1.5x scale

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.