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Finding the Fourth Proportional to 10,471.57, 15,679.86 and 8,801.58

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Solution

The fourth proportional to 10,471.57, 15,679.86 and 8,801.58 is: 13,179.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,471.57 : 15,679.86 = 8,801.58 : x
  2. Step 2: Convert to fraction form
    10,471.57/15,679.86 = 8,801.58/x
  3. Step 3: Cross multiply
    10,471.57x = 15,679.86 × 8,801.58
  4. Step 4: Simplify right side
    10,471.57x = 138,007,542.18
  5. Step 5: Solve for x
    x = 138,007,542.18/10,471.57
  6. Step 6: Final answer
    x = 13,179.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.