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Finding the Fourth Proportional to 18,633.12, 27,932.40 and 9,860.64

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Solution

The fourth proportional to 18,633.12, 27,932.40 and 9,860.64 is: 14,781.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,633.12 : 27,932.40 = 9,860.64 : x
  2. Step 2: Convert to fraction form
    18,633.12/27,932.40 = 9,860.64/x
  3. Step 3: Cross multiply
    18,633.12x = 27,932.40 × 9,860.64
  4. Step 4: Simplify right side
    18,633.12x = 275,431,340.74
  5. Step 5: Solve for x
    x = 275,431,340.74/18,633.12
  6. Step 6: Final answer
    x = 14,781.82

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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.