Home / 21,672.57-29,905.92-14,872.43

Finding the Fourth Proportional to 21,672.57, 29,905.92 and 14,872.43

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Solution

The fourth proportional to 21,672.57, 29,905.92 and 14,872.43 is: 20,522.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,672.57 : 29,905.92 = 14,872.43 : x
  2. Step 2: Convert to fraction form
    21,672.57/29,905.92 = 14,872.43/x
  3. Step 3: Cross multiply
    21,672.57x = 29,905.92 × 14,872.43
  4. Step 4: Simplify right side
    21,672.57x = 444,773,701.79
  5. Step 5: Solve for x
    x = 444,773,701.79/21,672.57
  6. Step 6: Final answer
    x = 20,522.43

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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.