Home / 12,446.47-17,175.69-6,781.12

Finding the Fourth Proportional to 12,446.47, 17,175.69 and 6,781.12

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Solution

The fourth proportional to 12,446.47, 17,175.69 and 6,781.12 is: 9,357.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,446.47 : 17,175.69 = 6,781.12 : x
  2. Step 2: Convert to fraction form
    12,446.47/17,175.69 = 6,781.12/x
  3. Step 3: Cross multiply
    12,446.47x = 17,175.69 × 6,781.12
  4. Step 4: Simplify right side
    12,446.47x = 116,470,414.97
  5. Step 5: Solve for x
    x = 116,470,414.97/12,446.47
  6. Step 6: Final answer
    x = 9,357.71

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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.