Home / 28,658.67-39,549.36-15,739

Finding the Fourth Proportional to 28,658.67, 39,549.36 and 15,739

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Solution

The fourth proportional to 28,658.67, 39,549.36 and 15,739 is: 21,720.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,658.67 : 39,549.36 = 15,739 : x
  2. Step 2: Convert to fraction form
    28,658.67/39,549.36 = 15,739/x
  3. Step 3: Cross multiply
    28,658.67x = 39,549.36 × 15,739
  4. Step 4: Simplify right side
    28,658.67x = 622,467,377.04
  5. Step 5: Solve for x
    x = 622,467,377.04/28,658.67
  6. Step 6: Final answer
    x = 21,720.04

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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.