Home / 20,366.46-28,144.30-15,321.92

Finding the Fourth Proportional to 20,366.46, 28,144.30 and 15,321.92

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Solution

The fourth proportional to 20,366.46, 28,144.30 and 15,321.92 is: 21,173.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,366.46 : 28,144.30 = 15,321.92 : x
  2. Step 2: Convert to fraction form
    20,366.46/28,144.30 = 15,321.92/x
  3. Step 3: Cross multiply
    20,366.46x = 28,144.30 × 15,321.92
  4. Step 4: Simplify right side
    20,366.46x = 431,224,713.06
  5. Step 5: Solve for x
    x = 431,224,713.06/20,366.46
  6. Step 6: Final answer
    x = 21,173.28

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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.