Home / 18,968.38-28,464.45-7,282.78

Finding the Fourth Proportional to 18,968.38, 28,464.45 and 7,282.78

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Solution

The fourth proportional to 18,968.38, 28,464.45 and 7,282.78 is: 10,928.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,968.38 : 28,464.45 = 7,282.78 : x
  2. Step 2: Convert to fraction form
    18,968.38/28,464.45 = 7,282.78/x
  3. Step 3: Cross multiply
    18,968.38x = 28,464.45 × 7,282.78
  4. Step 4: Simplify right side
    18,968.38x = 207,300,327.17
  5. Step 5: Solve for x
    x = 207,300,327.17/18,968.38
  6. Step 6: Final answer
    x = 10,928.73

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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.