Home / 20,139.44-30,213.48-8,445.92

Finding the Fourth Proportional to 20,139.44, 30,213.48 and 8,445.92

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Solution

The fourth proportional to 20,139.44, 30,213.48 and 8,445.92 is: 12,670.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,139.44 : 30,213.48 = 8,445.92 : x
  2. Step 2: Convert to fraction form
    20,139.44/30,213.48 = 8,445.92/x
  3. Step 3: Cross multiply
    20,139.44x = 30,213.48 × 8,445.92
  4. Step 4: Simplify right side
    20,139.44x = 255,180,635.00
  5. Step 5: Solve for x
    x = 255,180,635.00/20,139.44
  6. Step 6: Final answer
    x = 12,670.69

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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.