Home / 31,998.38-47,997.81-20,974.86

Finding the Fourth Proportional to 31,998.38, 47,997.81 and 20,974.86

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Solution

The fourth proportional to 31,998.38, 47,997.81 and 20,974.86 is: 31,462.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,998.38 : 47,997.81 = 20,974.86 : x
  2. Step 2: Convert to fraction form
    31,998.38/47,997.81 = 20,974.86/x
  3. Step 3: Cross multiply
    31,998.38x = 47,997.81 × 20,974.86
  4. Step 4: Simplify right side
    31,998.38x = 1,006,747,345.06
  5. Step 5: Solve for x
    x = 1,006,747,345.06/31,998.38
  6. Step 6: Final answer
    x = 31,462.45

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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.