Home / 31,375.20-47,077.36-11,660.60

Finding the Fourth Proportional to 31,375.20, 47,077.36 and 11,660.60

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Solution

The fourth proportional to 31,375.20, 47,077.36 and 11,660.60 is: 17,496.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,375.20 : 47,077.36 = 11,660.60 : x
  2. Step 2: Convert to fraction form
    31,375.20/47,077.36 = 11,660.60/x
  3. Step 3: Cross multiply
    31,375.20x = 47,077.36 × 11,660.60
  4. Step 4: Simplify right side
    31,375.20x = 548,950,264.02
  5. Step 5: Solve for x
    x = 548,950,264.02/31,375.20
  6. Step 6: Final answer
    x = 17,496.31

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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.