Home / 19,914.80-29,872.22-5,123.75

Finding the Fourth Proportional to 19,914.80, 29,872.22 and 5,123.75

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Solution

The fourth proportional to 19,914.80, 29,872.22 and 5,123.75 is: 7,685.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,914.80 : 29,872.22 = 5,123.75 : x
  2. Step 2: Convert to fraction form
    19,914.80/29,872.22 = 5,123.75/x
  3. Step 3: Cross multiply
    19,914.80x = 29,872.22 × 5,123.75
  4. Step 4: Simplify right side
    19,914.80x = 153,057,612.25
  5. Step 5: Solve for x
    x = 153,057,612.25/19,914.80
  6. Step 6: Final answer
    x = 7,685.62

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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.