Home / 38,731.26-58,101.75-12,428.94

Finding the Fourth Proportional to 38,731.26, 58,101.75 and 12,428.94

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Solution

The fourth proportional to 38,731.26, 58,101.75 and 12,428.94 is: 18,644.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,731.26 : 58,101.75 = 12,428.94 : x
  2. Step 2: Convert to fraction form
    38,731.26/58,101.75 = 12,428.94/x
  3. Step 3: Cross multiply
    38,731.26x = 58,101.75 × 12,428.94
  4. Step 4: Simplify right side
    38,731.26x = 722,143,164.65
  5. Step 5: Solve for x
    x = 722,143,164.65/38,731.26
  6. Step 6: Final answer
    x = 18,644.97

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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.