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Finding the Fourth Proportional to 18,218.61, 27,332.10 and 9,451.58

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Solution

The fourth proportional to 18,218.61, 27,332.10 and 9,451.58 is: 14,179.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,218.61 : 27,332.10 = 9,451.58 : x
  2. Step 2: Convert to fraction form
    18,218.61/27,332.10 = 9,451.58/x
  3. Step 3: Cross multiply
    18,218.61x = 27,332.10 × 9,451.58
  4. Step 4: Simplify right side
    18,218.61x = 258,331,393.06
  5. Step 5: Solve for x
    x = 258,331,393.06/18,218.61
  6. Step 6: Final answer
    x = 14,179.53

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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.