Home / 20,165.20-30,211.35-16,447.30

Finding the Fourth Proportional to 20,165.20, 30,211.35 and 16,447.30

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Solution

The fourth proportional to 20,165.20, 30,211.35 and 16,447.30 is: 24,641.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,165.20 : 30,211.35 = 16,447.30 : x
  2. Step 2: Convert to fraction form
    20,165.20/30,211.35 = 16,447.30/x
  3. Step 3: Cross multiply
    20,165.20x = 30,211.35 × 16,447.30
  4. Step 4: Simplify right side
    20,165.20x = 496,895,136.86
  5. Step 5: Solve for x
    x = 496,895,136.86/20,165.20
  6. Step 6: Final answer
    x = 24,641.22

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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.