Home / 11,920.11-16,452.14-6,885.15

Finding the Fourth Proportional to 11,920.11, 16,452.14 and 6,885.15

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Solution

The fourth proportional to 11,920.11, 16,452.14 and 6,885.15 is: 9,502.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,920.11 : 16,452.14 = 6,885.15 : x
  2. Step 2: Convert to fraction form
    11,920.11/16,452.14 = 6,885.15/x
  3. Step 3: Cross multiply
    11,920.11x = 16,452.14 × 6,885.15
  4. Step 4: Simplify right side
    11,920.11x = 113,275,417.30
  5. Step 5: Solve for x
    x = 113,275,417.30/11,920.11
  6. Step 6: Final answer
    x = 9,502.88

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Half scale
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Double scale
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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.