Home / 11,289.85-15,581.12-8,452.23

Finding the Fourth Proportional to 11,289.85, 15,581.12 and 8,452.23

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Solution

The fourth proportional to 11,289.85, 15,581.12 and 8,452.23 is: 11,664.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,289.85 : 15,581.12 = 8,452.23 : x
  2. Step 2: Convert to fraction form
    11,289.85/15,581.12 = 8,452.23/x
  3. Step 3: Cross multiply
    11,289.85x = 15,581.12 × 8,452.23
  4. Step 4: Simplify right side
    11,289.85x = 131,695,209.90
  5. Step 5: Solve for x
    x = 131,695,209.90/11,289.85
  6. Step 6: Final answer
    x = 11,664.92

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Half scale
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Double scale
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Similar ratio
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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.