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Finding the Fourth Proportional to 18,220.80, 27,337.68 and 9,455.52

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Solution

The fourth proportional to 18,220.80, 27,337.68 and 9,455.52 is: 14,186.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,220.80 : 27,337.68 = 9,455.52 : x
  2. Step 2: Convert to fraction form
    18,220.80/27,337.68 = 9,455.52/x
  3. Step 3: Cross multiply
    18,220.80x = 27,337.68 × 9,455.52
  4. Step 4: Simplify right side
    18,220.80x = 258,491,979.99
  5. Step 5: Solve for x
    x = 258,491,979.99/18,220.80
  6. Step 6: Final answer
    x = 14,186.64

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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.