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Finding the Fourth Proportional to 8,985.18, 13,475.82 and 8,540.49

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Solution

The fourth proportional to 8,985.18, 13,475.82 and 8,540.49 is: 12,808.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,985.18 : 13,475.82 = 8,540.49 : x
  2. Step 2: Convert to fraction form
    8,985.18/13,475.82 = 8,540.49/x
  3. Step 3: Cross multiply
    8,985.18x = 13,475.82 × 8,540.49
  4. Step 4: Simplify right side
    8,985.18x = 115,090,105.95
  5. Step 5: Solve for x
    x = 115,090,105.95/8,985.18
  6. Step 6: Final answer
    x = 12,808.88

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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.