Home / 20,839.47-31,260.29-5,257.23

Finding the Fourth Proportional to 20,839.47, 31,260.29 and 5,257.23

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Solution

The fourth proportional to 20,839.47, 31,260.29 and 5,257.23 is: 7,886.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,839.47 : 31,260.29 = 5,257.23 : x
  2. Step 2: Convert to fraction form
    20,839.47/31,260.29 = 5,257.23/x
  3. Step 3: Cross multiply
    20,839.47x = 31,260.29 × 5,257.23
  4. Step 4: Simplify right side
    20,839.47x = 164,342,508.11
  5. Step 5: Solve for x
    x = 164,342,508.11/20,839.47
  6. Step 6: Final answer
    x = 7,886.12

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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.