Home / 11,918.20-16,447.25-6,613.11

Finding the Fourth Proportional to 11,918.20, 16,447.25 and 6,613.11

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Solution

The fourth proportional to 11,918.20, 16,447.25 and 6,613.11 is: 9,126.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,918.20 : 16,447.25 = 6,613.11 : x
  2. Step 2: Convert to fraction form
    11,918.20/16,447.25 = 6,613.11/x
  3. Step 3: Cross multiply
    11,918.20x = 16,447.25 × 6,613.11
  4. Step 4: Simplify right side
    11,918.20x = 108,767,358.15
  5. Step 5: Solve for x
    x = 108,767,358.15/11,918.20
  6. Step 6: Final answer
    x = 9,126.16

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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.