Home / 18,781.47-28,163.70-8,932.68

Finding the Fourth Proportional to 18,781.47, 28,163.70 and 8,932.68

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Solution

The fourth proportional to 18,781.47, 28,163.70 and 8,932.68 is: 13,394.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,781.47 : 28,163.70 = 8,932.68 : x
  2. Step 2: Convert to fraction form
    18,781.47/28,163.70 = 8,932.68/x
  3. Step 3: Cross multiply
    18,781.47x = 28,163.70 × 8,932.68
  4. Step 4: Simplify right side
    18,781.47x = 251,577,319.72
  5. Step 5: Solve for x
    x = 251,577,319.72/18,781.47
  6. Step 6: Final answer
    x = 13,394.97

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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.