Home / 11,184.39-15,418.20-7,816.75

Finding the Fourth Proportional to 11,184.39, 15,418.20 and 7,816.75

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Solution

The fourth proportional to 11,184.39, 15,418.20 and 7,816.75 is: 10,775.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,184.39 : 15,418.20 = 7,816.75 : x
  2. Step 2: Convert to fraction form
    11,184.39/15,418.20 = 7,816.75/x
  3. Step 3: Cross multiply
    11,184.39x = 15,418.20 × 7,816.75
  4. Step 4: Simplify right side
    11,184.39x = 120,520,214.85
  5. Step 5: Solve for x
    x = 120,520,214.85/11,184.39
  6. Step 6: Final answer
    x = 10,775.75

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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.