Home / 20,380.16-30,581.27-8,534.97

Finding the Fourth Proportional to 20,380.16, 30,581.27 and 8,534.97

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Solution

The fourth proportional to 20,380.16, 30,581.27 and 8,534.97 is: 12,807.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,380.16 : 30,581.27 = 8,534.97 : x
  2. Step 2: Convert to fraction form
    20,380.16/30,581.27 = 8,534.97/x
  3. Step 3: Cross multiply
    20,380.16x = 30,581.27 × 8,534.97
  4. Step 4: Simplify right side
    20,380.16x = 261,010,179.34
  5. Step 5: Solve for x
    x = 261,010,179.34/20,380.16
  6. Step 6: Final answer
    x = 12,807.08

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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.