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Finding the Fourth Proportional to 18,207.72, 25,103.34 and 12,234.72

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Solution

The fourth proportional to 18,207.72, 25,103.34 and 12,234.72 is: 16,868.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,207.72 : 25,103.34 = 12,234.72 : x
  2. Step 2: Convert to fraction form
    18,207.72/25,103.34 = 12,234.72/x
  3. Step 3: Cross multiply
    18,207.72x = 25,103.34 × 12,234.72
  4. Step 4: Simplify right side
    18,207.72x = 307,132,335.96
  5. Step 5: Solve for x
    x = 307,132,335.96/18,207.72
  6. Step 6: Final answer
    x = 16,868.25

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Double scale
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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.