Home / 28,543.57-39,389.15-15,797.29

Finding the Fourth Proportional to 28,543.57, 39,389.15 and 15,797.29

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Solution

The fourth proportional to 28,543.57, 39,389.15 and 15,797.29 is: 21,799.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,543.57 : 39,389.15 = 15,797.29 : x
  2. Step 2: Convert to fraction form
    28,543.57/39,389.15 = 15,797.29/x
  3. Step 3: Cross multiply
    28,543.57x = 39,389.15 × 15,797.29
  4. Step 4: Simplify right side
    28,543.57x = 622,241,766.42
  5. Step 5: Solve for x
    x = 622,241,766.42/28,543.57
  6. Step 6: Final answer
    x = 21,799.72

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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.