Home / 20,707.38-31,057.56-10,174.68

Finding the Fourth Proportional to 20,707.38, 31,057.56 and 10,174.68

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Solution

The fourth proportional to 20,707.38, 31,057.56 and 10,174.68 is: 15,260.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,707.38 : 31,057.56 = 10,174.68 : x
  2. Step 2: Convert to fraction form
    20,707.38/31,057.56 = 10,174.68/x
  3. Step 3: Cross multiply
    20,707.38x = 31,057.56 × 10,174.68
  4. Step 4: Simplify right side
    20,707.38x = 316,000,734.58
  5. Step 5: Solve for x
    x = 316,000,734.58/20,707.38
  6. Step 6: Final answer
    x = 15,260.30

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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.