Home / 20,275.20-30,414.72-8,426.48

Finding the Fourth Proportional to 20,275.20, 30,414.72 and 8,426.48

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Solution

The fourth proportional to 20,275.20, 30,414.72 and 8,426.48 is: 12,640.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,275.20 : 30,414.72 = 8,426.48 : x
  2. Step 2: Convert to fraction form
    20,275.20/30,414.72 = 8,426.48/x
  3. Step 3: Cross multiply
    20,275.20x = 30,414.72 × 8,426.48
  4. Step 4: Simplify right side
    20,275.20x = 256,289,029.79
  5. Step 5: Solve for x
    x = 256,289,029.79/20,275.20
  6. Step 6: Final answer
    x = 12,640.52

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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.