Home / 21,648.22-29,872.96-12,569.43

Finding the Fourth Proportional to 21,648.22, 29,872.96 and 12,569.43

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Solution

The fourth proportional to 21,648.22, 29,872.96 and 12,569.43 is: 17,344.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,648.22 : 29,872.96 = 12,569.43 : x
  2. Step 2: Convert to fraction form
    21,648.22/29,872.96 = 12,569.43/x
  3. Step 3: Cross multiply
    21,648.22x = 29,872.96 × 12,569.43
  4. Step 4: Simplify right side
    21,648.22x = 375,486,079.61
  5. Step 5: Solve for x
    x = 375,486,079.61/21,648.22
  6. Step 6: Final answer
    x = 17,344.89

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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.