Home / 22,215.88-30,658.20-12,144.16

Finding the Fourth Proportional to 22,215.88, 30,658.20 and 12,144.16

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Solution

The fourth proportional to 22,215.88, 30,658.20 and 12,144.16 is: 16,759.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,215.88 : 30,658.20 = 12,144.16 : x
  2. Step 2: Convert to fraction form
    22,215.88/30,658.20 = 12,144.16/x
  3. Step 3: Cross multiply
    22,215.88x = 30,658.20 × 12,144.16
  4. Step 4: Simplify right side
    22,215.88x = 372,318,086.11
  5. Step 5: Solve for x
    x = 372,318,086.11/22,215.88
  6. Step 6: Final answer
    x = 16,759.10

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Half scale
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Double scale
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Similar ratio
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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.