Home / 19,916.42-29,872.19-5,125.41

Finding the Fourth Proportional to 19,916.42, 29,872.19 and 5,125.41

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Solution

The fourth proportional to 19,916.42, 29,872.19 and 5,125.41 is: 7,687.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,916.42 : 29,872.19 = 5,125.41 : x
  2. Step 2: Convert to fraction form
    19,916.42/29,872.19 = 5,125.41/x
  3. Step 3: Cross multiply
    19,916.42x = 29,872.19 × 5,125.41
  4. Step 4: Simplify right side
    19,916.42x = 153,107,234.16
  5. Step 5: Solve for x
    x = 153,107,234.16/19,916.42
  6. Step 6: Final answer
    x = 7,687.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.