Home / 20,275.75-30,422.06-8,432.12

Finding the Fourth Proportional to 20,275.75, 30,422.06 and 8,432.12

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Solution

The fourth proportional to 20,275.75, 30,422.06 and 8,432.12 is: 12,651.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,275.75 : 30,422.06 = 8,432.12 : x
  2. Step 2: Convert to fraction form
    20,275.75/30,422.06 = 8,432.12/x
  3. Step 3: Cross multiply
    20,275.75x = 30,422.06 × 8,432.12
  4. Step 4: Simplify right side
    20,275.75x = 256,522,526.08
  5. Step 5: Solve for x
    x = 256,522,526.08/20,275.75
  6. Step 6: Final answer
    x = 12,651.69

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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.