Home / 12,918.06-17,839.42-11,132.92

Finding the Fourth Proportional to 12,918.06, 17,839.42 and 11,132.92

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Solution

The fourth proportional to 12,918.06, 17,839.42 and 11,132.92 is: 15,374.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,918.06 : 17,839.42 = 11,132.92 : x
  2. Step 2: Convert to fraction form
    12,918.06/17,839.42 = 11,132.92/x
  3. Step 3: Cross multiply
    12,918.06x = 17,839.42 × 11,132.92
  4. Step 4: Simplify right side
    12,918.06x = 198,604,835.71
  5. Step 5: Solve for x
    x = 198,604,835.71/12,918.06
  6. Step 6: Final answer
    x = 15,374.20

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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.