Home / 20,142.60-30,156.30-12,366.60

Finding the Fourth Proportional to 20,142.60, 30,156.30 and 12,366.60

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Solution

The fourth proportional to 20,142.60, 30,156.30 and 12,366.60 is: 18,514.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,142.60 : 30,156.30 = 12,366.60 : x
  2. Step 2: Convert to fraction form
    20,142.60/30,156.30 = 12,366.60/x
  3. Step 3: Cross multiply
    20,142.60x = 30,156.30 × 12,366.60
  4. Step 4: Simplify right side
    20,142.60x = 372,930,899.58
  5. Step 5: Solve for x
    x = 372,930,899.58/20,142.60
  6. Step 6: Final answer
    x = 18,514.54

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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.