Home / 20,680.32-31,007.52-13,652.88

Finding the Fourth Proportional to 20,680.32, 31,007.52 and 13,652.88

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Solution

The fourth proportional to 20,680.32, 31,007.52 and 13,652.88 is: 20,470.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,680.32 : 31,007.52 = 13,652.88 : x
  2. Step 2: Convert to fraction form
    20,680.32/31,007.52 = 13,652.88/x
  3. Step 3: Cross multiply
    20,680.32x = 31,007.52 × 13,652.88
  4. Step 4: Simplify right side
    20,680.32x = 423,341,949.66
  5. Step 5: Solve for x
    x = 423,341,949.66/20,680.32
  6. Step 6: Final answer
    x = 20,470.76

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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.