Home / 17,129.28-25,674.84-7,128.52

Finding the Fourth Proportional to 17,129.28, 25,674.84 and 7,128.52

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Solution

The fourth proportional to 17,129.28, 25,674.84 and 7,128.52 is: 10,684.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,129.28 : 25,674.84 = 7,128.52 : x
  2. Step 2: Convert to fraction form
    17,129.28/25,674.84 = 7,128.52/x
  3. Step 3: Cross multiply
    17,129.28x = 25,674.84 × 7,128.52
  4. Step 4: Simplify right side
    17,129.28x = 183,023,546.25
  5. Step 5: Solve for x
    x = 183,023,546.25/17,129.28
  6. Step 6: Final answer
    x = 10,684.83

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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.