Home / 20,997.24-31,501.28-7,849.71

Finding the Fourth Proportional to 20,997.24, 31,501.28 and 7,849.71

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Solution

The fourth proportional to 20,997.24, 31,501.28 and 7,849.71 is: 11,776.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,997.24 : 31,501.28 = 7,849.71 : x
  2. Step 2: Convert to fraction form
    20,997.24/31,501.28 = 7,849.71/x
  3. Step 3: Cross multiply
    20,997.24x = 31,501.28 × 7,849.71
  4. Step 4: Simplify right side
    20,997.24x = 247,275,873.38
  5. Step 5: Solve for x
    x = 247,275,873.38/20,997.24
  6. Step 6: Final answer
    x = 11,776.59

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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.