Home / 20,158.80-30,238.26-8,471.98

Finding the Fourth Proportional to 20,158.80, 30,238.26 and 8,471.98

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Solution

The fourth proportional to 20,158.80, 30,238.26 and 8,471.98 is: 12,708.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,158.80 : 30,238.26 = 8,471.98 : x
  2. Step 2: Convert to fraction form
    20,158.80/30,238.26 = 8,471.98/x
  3. Step 3: Cross multiply
    20,158.80x = 30,238.26 × 8,471.98
  4. Step 4: Simplify right side
    20,158.80x = 256,177,933.95
  5. Step 5: Solve for x
    x = 256,177,933.95/20,158.80
  6. Step 6: Final answer
    x = 12,708.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.