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Finding the Fourth Proportional to 13,560.62, 18,712.62 and 8,254.85

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Solution

The fourth proportional to 13,560.62, 18,712.62 and 8,254.85 is: 11,391.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,560.62 : 18,712.62 = 8,254.85 : x
  2. Step 2: Convert to fraction form
    13,560.62/18,712.62 = 8,254.85/x
  3. Step 3: Cross multiply
    13,560.62x = 18,712.62 × 8,254.85
  4. Step 4: Simplify right side
    13,560.62x = 154,469,871.21
  5. Step 5: Solve for x
    x = 154,469,871.21/13,560.62
  6. Step 6: Final answer
    x = 11,391.06

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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.