Home / 18,279.18-25,227.38-11,109.47

Finding the Fourth Proportional to 18,279.18, 25,227.38 and 11,109.47

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Solution

The fourth proportional to 18,279.18, 25,227.38 and 11,109.47 is: 15,332.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,279.18 : 25,227.38 = 11,109.47 : x
  2. Step 2: Convert to fraction form
    18,279.18/25,227.38 = 11,109.47/x
  3. Step 3: Cross multiply
    18,279.18x = 25,227.38 × 11,109.47
  4. Step 4: Simplify right side
    18,279.18x = 280,262,722.93
  5. Step 5: Solve for x
    x = 280,262,722.93/18,279.18
  6. Step 6: Final answer
    x = 15,332.35

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.