Home / 20,833.89-31,251.04-5,251.52

Finding the Fourth Proportional to 20,833.89, 31,251.04 and 5,251.52

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Solution

The fourth proportional to 20,833.89, 31,251.04 and 5,251.52 is: 7,877.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,833.89 : 31,251.04 = 5,251.52 : x
  2. Step 2: Convert to fraction form
    20,833.89/31,251.04 = 5,251.52/x
  3. Step 3: Cross multiply
    20,833.89x = 31,251.04 × 5,251.52
  4. Step 4: Simplify right side
    20,833.89x = 164,115,292.20
  5. Step 5: Solve for x
    x = 164,115,292.20/20,833.89
  6. Step 6: Final answer
    x = 7,877.32

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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.