Home / 31,976.65-47,971.89-12,255.22

Finding the Fourth Proportional to 31,976.65, 47,971.89 and 12,255.22

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Solution

The fourth proportional to 31,976.65, 47,971.89 and 12,255.22 is: 18,385.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,976.65 : 47,971.89 = 12,255.22 : x
  2. Step 2: Convert to fraction form
    31,976.65/47,971.89 = 12,255.22/x
  3. Step 3: Cross multiply
    31,976.65x = 47,971.89 × 12,255.22
  4. Step 4: Simplify right side
    31,976.65x = 587,905,945.84
  5. Step 5: Solve for x
    x = 587,905,945.84/31,976.65
  6. Step 6: Final answer
    x = 18,385.48

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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.