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Finding the Fourth Proportional to 15,177.64, 20,939.04 and 9,207.14

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Solution

The fourth proportional to 15,177.64, 20,939.04 and 9,207.14 is: 12,702.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,177.64 : 20,939.04 = 9,207.14 : x
  2. Step 2: Convert to fraction form
    15,177.64/20,939.04 = 9,207.14/x
  3. Step 3: Cross multiply
    15,177.64x = 20,939.04 × 9,207.14
  4. Step 4: Simplify right side
    15,177.64x = 192,788,672.75
  5. Step 5: Solve for x
    x = 192,788,672.75/15,177.64
  6. Step 6: Final answer
    x = 12,702.15

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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.