Home / 11,318.72-15,587.54-8,169.92

Finding the Fourth Proportional to 11,318.72, 15,587.54 and 8,169.92

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Solution

The fourth proportional to 11,318.72, 15,587.54 and 8,169.92 is: 11,251.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,318.72 : 15,587.54 = 8,169.92 : x
  2. Step 2: Convert to fraction form
    11,318.72/15,587.54 = 8,169.92/x
  3. Step 3: Cross multiply
    11,318.72x = 15,587.54 × 8,169.92
  4. Step 4: Simplify right side
    11,318.72x = 127,348,954.80
  5. Step 5: Solve for x
    x = 127,348,954.80/11,318.72
  6. Step 6: Final answer
    x = 11,251.18

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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.