Home / 20,522.80-28,321.25-11,573.19

Finding the Fourth Proportional to 20,522.80, 28,321.25 and 11,573.19

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Solution

The fourth proportional to 20,522.80, 28,321.25 and 11,573.19 is: 15,970.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,522.80 : 28,321.25 = 11,573.19 : x
  2. Step 2: Convert to fraction form
    20,522.80/28,321.25 = 11,573.19/x
  3. Step 3: Cross multiply
    20,522.80x = 28,321.25 × 11,573.19
  4. Step 4: Simplify right side
    20,522.80x = 327,767,149.42
  5. Step 5: Solve for x
    x = 327,767,149.42/20,522.80
  6. Step 6: Final answer
    x = 15,970.88

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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.