Home / 31,881.25-47,801.37-12,149.04

Finding the Fourth Proportional to 31,881.25, 47,801.37 and 12,149.04

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Solution

The fourth proportional to 31,881.25, 47,801.37 and 12,149.04 is: 18,215.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,881.25 : 47,801.37 = 12,149.04 : x
  2. Step 2: Convert to fraction form
    31,881.25/47,801.37 = 12,149.04/x
  3. Step 3: Cross multiply
    31,881.25x = 47,801.37 × 12,149.04
  4. Step 4: Simplify right side
    31,881.25x = 580,740,756.18
  5. Step 5: Solve for x
    x = 580,740,756.18/31,881.25
  6. Step 6: Final answer
    x = 18,215.75

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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.