Home / 20,232.60-30,348.90-12,445.80

Finding the Fourth Proportional to 20,232.60, 30,348.90 and 12,445.80

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Solution

The fourth proportional to 20,232.60, 30,348.90 and 12,445.80 is: 18,668.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,232.60 : 30,348.90 = 12,445.80 : x
  2. Step 2: Convert to fraction form
    20,232.60/30,348.90 = 12,445.80/x
  3. Step 3: Cross multiply
    20,232.60x = 30,348.90 × 12,445.80
  4. Step 4: Simplify right side
    20,232.60x = 377,716,339.62
  5. Step 5: Solve for x
    x = 377,716,339.62/20,232.60
  6. Step 6: Final answer
    x = 18,668.70

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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.