Home / 13,398.66-20,171.88-11,847.24

Finding the Fourth Proportional to 13,398.66, 20,171.88 and 11,847.24

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Solution

The fourth proportional to 13,398.66, 20,171.88 and 11,847.24 is: 17,836.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,398.66 : 20,171.88 = 11,847.24 : x
  2. Step 2: Convert to fraction form
    13,398.66/20,171.88 = 11,847.24/x
  3. Step 3: Cross multiply
    13,398.66x = 20,171.88 × 11,847.24
  4. Step 4: Simplify right side
    13,398.66x = 238,981,103.61
  5. Step 5: Solve for x
    x = 238,981,103.61/13,398.66
  6. Step 6: Final answer
    x = 17,836.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.