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Finding the Fourth Proportional to 12,549.17, 18,826.92 and 8,858.61

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Solution

The fourth proportional to 12,549.17, 18,826.92 and 8,858.61 is: 13,290.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,549.17 : 18,826.92 = 8,858.61 : x
  2. Step 2: Convert to fraction form
    12,549.17/18,826.92 = 8,858.61/x
  3. Step 3: Cross multiply
    12,549.17x = 18,826.92 × 8,858.61
  4. Step 4: Simplify right side
    12,549.17x = 166,780,341.78
  5. Step 5: Solve for x
    x = 166,780,341.78/12,549.17
  6. Step 6: Final answer
    x = 13,290.15

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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.