Home / 20,247.60-30,371.40-5,458.80

Finding the Fourth Proportional to 20,247.60, 30,371.40 and 5,458.80

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Solution

The fourth proportional to 20,247.60, 30,371.40 and 5,458.80 is: 8,188.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,247.60 : 30,371.40 = 5,458.80 : x
  2. Step 2: Convert to fraction form
    20,247.60/30,371.40 = 5,458.80/x
  3. Step 3: Cross multiply
    20,247.60x = 30,371.40 × 5,458.80
  4. Step 4: Simplify right side
    20,247.60x = 165,791,398.32
  5. Step 5: Solve for x
    x = 165,791,398.32/20,247.60
  6. Step 6: Final answer
    x = 8,188.20

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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.