Home / 18,912.68-28,319.46-13,335.82

Finding the Fourth Proportional to 18,912.68, 28,319.46 and 13,335.82

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Solution

The fourth proportional to 18,912.68, 28,319.46 and 13,335.82 is: 19,968.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,912.68 : 28,319.46 = 13,335.82 : x
  2. Step 2: Convert to fraction form
    18,912.68/28,319.46 = 13,335.82/x
  3. Step 3: Cross multiply
    18,912.68x = 28,319.46 × 13,335.82
  4. Step 4: Simplify right side
    18,912.68x = 377,663,221.06
  5. Step 5: Solve for x
    x = 377,663,221.06/18,912.68
  6. Step 6: Final answer
    x = 19,968.78

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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.