Home / 17,112.28-25,672.40-5,425.20

Finding the Fourth Proportional to 17,112.28, 25,672.40 and 5,425.20

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Solution

The fourth proportional to 17,112.28, 25,672.40 and 5,425.20 is: 8,139.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,112.28 : 25,672.40 = 5,425.20 : x
  2. Step 2: Convert to fraction form
    17,112.28/25,672.40 = 5,425.20/x
  3. Step 3: Cross multiply
    17,112.28x = 25,672.40 × 5,425.20
  4. Step 4: Simplify right side
    17,112.28x = 139,277,904.48
  5. Step 5: Solve for x
    x = 139,277,904.48/17,112.28
  6. Step 6: Final answer
    x = 8,139.06

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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.