Home / 20,517.48-28,312.42-11,567.18

Finding the Fourth Proportional to 20,517.48, 28,312.42 and 11,567.18

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Solution

The fourth proportional to 20,517.48, 28,312.42 and 11,567.18 is: 15,961.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,517.48 : 28,312.42 = 11,567.18 : x
  2. Step 2: Convert to fraction form
    20,517.48/28,312.42 = 11,567.18/x
  3. Step 3: Cross multiply
    20,517.48x = 28,312.42 × 11,567.18
  4. Step 4: Simplify right side
    20,517.48x = 327,494,891.10
  5. Step 5: Solve for x
    x = 327,494,891.10/20,517.48
  6. Step 6: Final answer
    x = 15,961.75

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1.5x scale

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.