Home / 20,279.92-30,394.76-11,488.18

Finding the Fourth Proportional to 20,279.92, 30,394.76 and 11,488.18

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Solution

The fourth proportional to 20,279.92, 30,394.76 and 11,488.18 is: 17,218.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,279.92 : 30,394.76 = 11,488.18 : x
  2. Step 2: Convert to fraction form
    20,279.92/30,394.76 = 11,488.18/x
  3. Step 3: Cross multiply
    20,279.92x = 30,394.76 × 11,488.18
  4. Step 4: Simplify right side
    20,279.92x = 349,180,473.94
  5. Step 5: Solve for x
    x = 349,180,473.94/20,279.92
  6. Step 6: Final answer
    x = 17,218.04

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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.