Home / 21,390.97-29,523.18-12,443.66

Finding the Fourth Proportional to 21,390.97, 29,523.18 and 12,443.66

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Solution

The fourth proportional to 21,390.97, 29,523.18 and 12,443.66 is: 17,174.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,390.97 : 29,523.18 = 12,443.66 : x
  2. Step 2: Convert to fraction form
    21,390.97/29,523.18 = 12,443.66/x
  3. Step 3: Cross multiply
    21,390.97x = 29,523.18 × 12,443.66
  4. Step 4: Simplify right side
    21,390.97x = 367,376,414.04
  5. Step 5: Solve for x
    x = 367,376,414.04/21,390.97
  6. Step 6: Final answer
    x = 17,174.37

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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.