Home / 31,353.92-47,015.44-15,540.80

Finding the Fourth Proportional to 31,353.92, 47,015.44 and 15,540.80

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Solution

The fourth proportional to 31,353.92, 47,015.44 and 15,540.80 is: 23,303.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,353.92 : 47,015.44 = 15,540.80 : x
  2. Step 2: Convert to fraction form
    31,353.92/47,015.44 = 15,540.80/x
  3. Step 3: Cross multiply
    31,353.92x = 47,015.44 × 15,540.80
  4. Step 4: Simplify right side
    31,353.92x = 730,657,549.95
  5. Step 5: Solve for x
    x = 730,657,549.95/31,353.92
  6. Step 6: Final answer
    x = 23,303.55

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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.