Home / 20,833.79-31,250.69-5,251.41

Finding the Fourth Proportional to 20,833.79, 31,250.69 and 5,251.41

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Solution

The fourth proportional to 20,833.79, 31,250.69 and 5,251.41 is: 7,877.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,833.79 : 31,250.69 = 5,251.41 : x
  2. Step 2: Convert to fraction form
    20,833.79/31,250.69 = 5,251.41/x
  3. Step 3: Cross multiply
    20,833.79x = 31,250.69 × 5,251.41
  4. Step 4: Simplify right side
    20,833.79x = 164,110,199.10
  5. Step 5: Solve for x
    x = 164,110,199.10/20,833.79
  6. Step 6: Final answer
    x = 7,877.12

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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.