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Finding the Fourth Proportional to 18,092.61, 27,092.18 and 12,487.58

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Solution

The fourth proportional to 18,092.61, 27,092.18 and 12,487.58 is: 18,699.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,092.61 : 27,092.18 = 12,487.58 : x
  2. Step 2: Convert to fraction form
    18,092.61/27,092.18 = 12,487.58/x
  3. Step 3: Cross multiply
    18,092.61x = 27,092.18 × 12,487.58
  4. Step 4: Simplify right side
    18,092.61x = 338,315,765.12
  5. Step 5: Solve for x
    x = 338,315,765.12/18,092.61
  6. Step 6: Final answer
    x = 18,699.11

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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.