Home / 20,833.39-31,250.29-5,251.02

Finding the Fourth Proportional to 20,833.39, 31,250.29 and 5,251.02

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Solution

The fourth proportional to 20,833.39, 31,250.29 and 5,251.02 is: 7,876.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,833.39 : 31,250.29 = 5,251.02 : x
  2. Step 2: Convert to fraction form
    20,833.39/31,250.29 = 5,251.02/x
  3. Step 3: Cross multiply
    20,833.39x = 31,250.29 × 5,251.02
  4. Step 4: Simplify right side
    20,833.39x = 164,095,897.80
  5. Step 5: Solve for x
    x = 164,095,897.80/20,833.39
  6. Step 6: Final answer
    x = 7,876.58

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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.