Home / 17,120.39-25,683-5,275.12

Finding the Fourth Proportional to 17,120.39, 25,683 and 5,275.12

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Solution

The fourth proportional to 17,120.39, 25,683 and 5,275.12 is: 7,913.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,120.39 : 25,683 = 5,275.12 : x
  2. Step 2: Convert to fraction form
    17,120.39/25,683 = 5,275.12/x
  3. Step 3: Cross multiply
    17,120.39x = 25,683 × 5,275.12
  4. Step 4: Simplify right side
    17,120.39x = 135,480,842.75
  5. Step 5: Solve for x
    x = 135,480,842.75/17,120.39
  6. Step 6: Final answer
    x = 7,913.42

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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.