Home / 20,832.31-31,250.90-7,319.33

Finding the Fourth Proportional to 20,832.31, 31,250.90 and 7,319.33

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Solution

The fourth proportional to 20,832.31, 31,250.90 and 7,319.33 is: 10,979.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,832.31 : 31,250.90 = 7,319.33 : x
  2. Step 2: Convert to fraction form
    20,832.31/31,250.90 = 7,319.33/x
  3. Step 3: Cross multiply
    20,832.31x = 31,250.90 × 7,319.33
  4. Step 4: Simplify right side
    20,832.31x = 228,735,649.90
  5. Step 5: Solve for x
    x = 228,735,649.90/20,832.31
  6. Step 6: Final answer
    x = 10,979.85

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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.