Home / 17,278.44-25,920.40-5,431.28

Finding the Fourth Proportional to 17,278.44, 25,920.40 and 5,431.28

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Solution

The fourth proportional to 17,278.44, 25,920.40 and 5,431.28 is: 8,147.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,278.44 : 25,920.40 = 5,431.28 : x
  2. Step 2: Convert to fraction form
    17,278.44/25,920.40 = 5,431.28/x
  3. Step 3: Cross multiply
    17,278.44x = 25,920.40 × 5,431.28
  4. Step 4: Simplify right side
    17,278.44x = 140,780,950.11
  5. Step 5: Solve for x
    x = 140,780,950.11/17,278.44
  6. Step 6: Final answer
    x = 8,147.78

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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.