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Finding the Fourth Proportional to 17,921.16, 24,729.80 and 9,962.90

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Solution

The fourth proportional to 17,921.16, 24,729.80 and 9,962.90 is: 13,748.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,921.16 : 24,729.80 = 9,962.90 : x
  2. Step 2: Convert to fraction form
    17,921.16/24,729.80 = 9,962.90/x
  3. Step 3: Cross multiply
    17,921.16x = 24,729.80 × 9,962.90
  4. Step 4: Simplify right side
    17,921.16x = 246,380,524.42
  5. Step 5: Solve for x
    x = 246,380,524.42/17,921.16
  6. Step 6: Final answer
    x = 13,748.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.