Home / 20,769.89-31,151.75-6,731.14

Finding the Fourth Proportional to 20,769.89, 31,151.75 and 6,731.14

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Solution

The fourth proportional to 20,769.89, 31,151.75 and 6,731.14 is: 10,095.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,769.89 : 31,151.75 = 6,731.14 : x
  2. Step 2: Convert to fraction form
    20,769.89/31,151.75 = 6,731.14/x
  3. Step 3: Cross multiply
    20,769.89x = 31,151.75 × 6,731.14
  4. Step 4: Simplify right side
    20,769.89x = 209,686,729.44
  5. Step 5: Solve for x
    x = 209,686,729.44/20,769.89
  6. Step 6: Final answer
    x = 10,095.71

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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.