Home / 38,482.20-57,723.30-20,986.20

Finding the Fourth Proportional to 38,482.20, 57,723.30 and 20,986.20

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Solution

The fourth proportional to 38,482.20, 57,723.30 and 20,986.20 is: 31,479.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,482.20 : 57,723.30 = 20,986.20 : x
  2. Step 2: Convert to fraction form
    38,482.20/57,723.30 = 20,986.20/x
  3. Step 3: Cross multiply
    38,482.20x = 57,723.30 × 20,986.20
  4. Step 4: Simplify right side
    38,482.20x = 1,211,392,718.46
  5. Step 5: Solve for x
    x = 1,211,392,718.46/38,482.20
  6. Step 6: Final answer
    x = 31,479.30

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Similar ratio
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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.