Home / 18,117.38-27,132.18-9,209.28

Finding the Fourth Proportional to 18,117.38, 27,132.18 and 9,209.28

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Solution

The fourth proportional to 18,117.38, 27,132.18 and 9,209.28 is: 13,791.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,117.38 : 27,132.18 = 9,209.28 : x
  2. Step 2: Convert to fraction form
    18,117.38/27,132.18 = 9,209.28/x
  3. Step 3: Cross multiply
    18,117.38x = 27,132.18 × 9,209.28
  4. Step 4: Simplify right side
    18,117.38x = 249,867,842.63
  5. Step 5: Solve for x
    x = 249,867,842.63/18,117.38
  6. Step 6: Final answer
    x = 13,791.61

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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.