Home / 31,939.13-47,905.05-8,563.75

Finding the Fourth Proportional to 31,939.13, 47,905.05 and 8,563.75

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Solution

The fourth proportional to 31,939.13, 47,905.05 and 8,563.75 is: 12,844.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,939.13 : 47,905.05 = 8,563.75 : x
  2. Step 2: Convert to fraction form
    31,939.13/47,905.05 = 8,563.75/x
  3. Step 3: Cross multiply
    31,939.13x = 47,905.05 × 8,563.75
  4. Step 4: Simplify right side
    31,939.13x = 410,246,871.94
  5. Step 5: Solve for x
    x = 410,246,871.94/31,939.13
  6. Step 6: Final answer
    x = 12,844.65

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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.