Home / 11,918.35-16,447.35-6,613.18

Finding the Fourth Proportional to 11,918.35, 16,447.35 and 6,613.18

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Solution

The fourth proportional to 11,918.35, 16,447.35 and 6,613.18 is: 9,126.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,918.35 : 16,447.35 = 6,613.18 : x
  2. Step 2: Convert to fraction form
    11,918.35/16,447.35 = 6,613.18/x
  3. Step 3: Cross multiply
    11,918.35x = 16,447.35 × 6,613.18
  4. Step 4: Simplify right side
    11,918.35x = 108,769,286.07
  5. Step 5: Solve for x
    x = 108,769,286.07/11,918.35
  6. Step 6: Final answer
    x = 9,126.20

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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.