Home / 20,836.92-31,255.29-5,254.50

Finding the Fourth Proportional to 20,836.92, 31,255.29 and 5,254.50

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Solution

The fourth proportional to 20,836.92, 31,255.29 and 5,254.50 is: 7,881.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,836.92 : 31,255.29 = 5,254.50 : x
  2. Step 2: Convert to fraction form
    20,836.92/31,255.29 = 5,254.50/x
  3. Step 3: Cross multiply
    20,836.92x = 31,255.29 × 5,254.50
  4. Step 4: Simplify right side
    20,836.92x = 164,230,921.31
  5. Step 5: Solve for x
    x = 164,230,921.31/20,836.92
  6. Step 6: Final answer
    x = 7,881.73

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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.