Home / 20,178.60-30,268.17-6,138.60

Finding the Fourth Proportional to 20,178.60, 30,268.17 and 6,138.60

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Solution

The fourth proportional to 20,178.60, 30,268.17 and 6,138.60 is: 9,207.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,178.60 : 30,268.17 = 6,138.60 : x
  2. Step 2: Convert to fraction form
    20,178.60/30,268.17 = 6,138.60/x
  3. Step 3: Cross multiply
    20,178.60x = 30,268.17 × 6,138.60
  4. Step 4: Simplify right side
    20,178.60x = 185,804,188.36
  5. Step 5: Solve for x
    x = 185,804,188.36/20,178.60
  6. Step 6: Final answer
    x = 9,207.98

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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.