Home / 20,833.28-31,249.94-5,250.91

Finding the Fourth Proportional to 20,833.28, 31,249.94 and 5,250.91

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Solution

The fourth proportional to 20,833.28, 31,249.94 and 5,250.91 is: 7,876.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,833.28 : 31,249.94 = 5,250.91 : x
  2. Step 2: Convert to fraction form
    20,833.28/31,249.94 = 5,250.91/x
  3. Step 3: Cross multiply
    20,833.28x = 31,249.94 × 5,250.91
  4. Step 4: Simplify right side
    20,833.28x = 164,090,544.32
  5. Step 5: Solve for x
    x = 164,090,544.32/20,833.28
  6. Step 6: Final answer
    x = 7,876.37

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1.5x scale

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.