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Finding the Fourth Proportional to 15,086.08, 20,817.88 and 8,371.32

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Solution

The fourth proportional to 15,086.08, 20,817.88 and 8,371.32 is: 11,551.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,086.08 : 20,817.88 = 8,371.32 : x
  2. Step 2: Convert to fraction form
    15,086.08/20,817.88 = 8,371.32/x
  3. Step 3: Cross multiply
    15,086.08x = 20,817.88 × 8,371.32
  4. Step 4: Simplify right side
    15,086.08x = 174,273,135.20
  5. Step 5: Solve for x
    x = 174,273,135.20/15,086.08
  6. Step 6: Final answer
    x = 11,551.92

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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.