Home / 31,877.78-47,822.46-13,147.60

Finding the Fourth Proportional to 31,877.78, 47,822.46 and 13,147.60

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Solution

The fourth proportional to 31,877.78, 47,822.46 and 13,147.60 is: 19,723.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,877.78 : 47,822.46 = 13,147.60 : x
  2. Step 2: Convert to fraction form
    31,877.78/47,822.46 = 13,147.60/x
  3. Step 3: Cross multiply
    31,877.78x = 47,822.46 × 13,147.60
  4. Step 4: Simplify right side
    31,877.78x = 628,750,575.10
  5. Step 5: Solve for x
    x = 628,750,575.10/31,877.78
  6. Step 6: Final answer
    x = 19,723.79

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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.