Home / 31,971.25-47,963.80-12,249.81

Finding the Fourth Proportional to 31,971.25, 47,963.80 and 12,249.81

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Solution

The fourth proportional to 31,971.25, 47,963.80 and 12,249.81 is: 18,377.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,971.25 : 47,963.80 = 12,249.81 : x
  2. Step 2: Convert to fraction form
    31,971.25/47,963.80 = 12,249.81/x
  3. Step 3: Cross multiply
    31,971.25x = 47,963.80 × 12,249.81
  4. Step 4: Simplify right side
    31,971.25x = 587,547,436.88
  5. Step 5: Solve for x
    x = 587,547,436.88/31,971.25
  6. Step 6: Final answer
    x = 18,377.37

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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.