Home / 11,081.14-15,306.56-8,215.68

Finding the Fourth Proportional to 11,081.14, 15,306.56 and 8,215.68

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Solution

The fourth proportional to 11,081.14, 15,306.56 and 8,215.68 is: 11,348.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,081.14 : 15,306.56 = 8,215.68 : x
  2. Step 2: Convert to fraction form
    11,081.14/15,306.56 = 8,215.68/x
  3. Step 3: Cross multiply
    11,081.14x = 15,306.56 × 8,215.68
  4. Step 4: Simplify right side
    11,081.14x = 125,753,798.86
  5. Step 5: Solve for x
    x = 125,753,798.86/11,081.14
  6. Step 6: Final answer
    x = 11,348.45

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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.