Home / 20,140.20-30,173.85-16,422.30

Finding the Fourth Proportional to 20,140.20, 30,173.85 and 16,422.30

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Solution

The fourth proportional to 20,140.20, 30,173.85 and 16,422.30 is: 24,603.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,140.20 : 30,173.85 = 16,422.30 : x
  2. Step 2: Convert to fraction form
    20,140.20/30,173.85 = 16,422.30/x
  3. Step 3: Cross multiply
    20,140.20x = 30,173.85 × 16,422.30
  4. Step 4: Simplify right side
    20,140.20x = 495,524,016.86
  5. Step 5: Solve for x
    x = 495,524,016.86/20,140.20
  6. Step 6: Final answer
    x = 24,603.73

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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.