Home / 20,625.40-30,944.28-8,147.20

Finding the Fourth Proportional to 20,625.40, 30,944.28 and 8,147.20

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Solution

The fourth proportional to 20,625.40, 30,944.28 and 8,147.20 is: 12,223.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,625.40 : 30,944.28 = 8,147.20 : x
  2. Step 2: Convert to fraction form
    20,625.40/30,944.28 = 8,147.20/x
  3. Step 3: Cross multiply
    20,625.40x = 30,944.28 × 8,147.20
  4. Step 4: Simplify right side
    20,625.40x = 252,109,238.02
  5. Step 5: Solve for x
    x = 252,109,238.02/20,625.40
  6. Step 6: Final answer
    x = 12,223.24

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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.