Home / 20,939.28-31,402.26-6,896.19

Finding the Fourth Proportional to 20,939.28, 31,402.26 and 6,896.19

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Solution

The fourth proportional to 20,939.28, 31,402.26 and 6,896.19 is: 10,342.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,939.28 : 31,402.26 = 6,896.19 : x
  2. Step 2: Convert to fraction form
    20,939.28/31,402.26 = 6,896.19/x
  3. Step 3: Cross multiply
    20,939.28x = 31,402.26 × 6,896.19
  4. Step 4: Simplify right side
    20,939.28x = 216,555,873.11
  5. Step 5: Solve for x
    x = 216,555,873.11/20,939.28
  6. Step 6: Final answer
    x = 10,342.09

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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.