Home / 18,921.60-28,381.44-7,233.92

Finding the Fourth Proportional to 18,921.60, 28,381.44 and 7,233.92

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Solution

The fourth proportional to 18,921.60, 28,381.44 and 7,233.92 is: 10,850.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,921.60 : 28,381.44 = 7,233.92 : x
  2. Step 2: Convert to fraction form
    18,921.60/28,381.44 = 7,233.92/x
  3. Step 3: Cross multiply
    18,921.60x = 28,381.44 × 7,233.92
  4. Step 4: Simplify right side
    18,921.60x = 205,309,066.44
  5. Step 5: Solve for x
    x = 205,309,066.44/18,921.60
  6. Step 6: Final answer
    x = 10,850.51

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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.