Home / 20,381.58-30,572.35-5,591.66

Finding the Fourth Proportional to 20,381.58, 30,572.35 and 5,591.66

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Solution

The fourth proportional to 20,381.58, 30,572.35 and 5,591.66 is: 8,387.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,381.58 : 30,572.35 = 5,591.66 : x
  2. Step 2: Convert to fraction form
    20,381.58/30,572.35 = 5,591.66/x
  3. Step 3: Cross multiply
    20,381.58x = 30,572.35 × 5,591.66
  4. Step 4: Simplify right side
    20,381.58x = 170,950,019.76
  5. Step 5: Solve for x
    x = 170,950,019.76/20,381.58
  6. Step 6: Final answer
    x = 8,387.48

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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.