Home / 21,287.36-31,934.46-7,248.26

Finding the Fourth Proportional to 21,287.36, 31,934.46 and 7,248.26

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Solution

The fourth proportional to 21,287.36, 31,934.46 and 7,248.26 is: 10,873.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,287.36 : 31,934.46 = 7,248.26 : x
  2. Step 2: Convert to fraction form
    21,287.36/31,934.46 = 7,248.26/x
  3. Step 3: Cross multiply
    21,287.36x = 31,934.46 × 7,248.26
  4. Step 4: Simplify right side
    21,287.36x = 231,469,269.04
  5. Step 5: Solve for x
    x = 231,469,269.04/21,287.36
  6. Step 6: Final answer
    x = 10,873.55

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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.