Home / 20,140.20-30,215.18-8,446.92

Finding the Fourth Proportional to 20,140.20, 30,215.18 and 8,446.92

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Solution

The fourth proportional to 20,140.20, 30,215.18 and 8,446.92 is: 12,672.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,140.20 : 30,215.18 = 8,446.92 : x
  2. Step 2: Convert to fraction form
    20,140.20/30,215.18 = 8,446.92/x
  3. Step 3: Cross multiply
    20,140.20x = 30,215.18 × 8,446.92
  4. Step 4: Simplify right side
    20,140.20x = 255,225,208.25
  5. Step 5: Solve for x
    x = 255,225,208.25/20,140.20
  6. Step 6: Final answer
    x = 12,672.43

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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.