Home / 31,965.36-47,947.77-8,272.86

Finding the Fourth Proportional to 31,965.36, 47,947.77 and 8,272.86

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Solution

The fourth proportional to 31,965.36, 47,947.77 and 8,272.86 is: 12,409.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,965.36 : 47,947.77 = 8,272.86 : x
  2. Step 2: Convert to fraction form
    31,965.36/47,947.77 = 8,272.86/x
  3. Step 3: Cross multiply
    31,965.36x = 47,947.77 × 8,272.86
  4. Step 4: Simplify right side
    31,965.36x = 396,665,188.52
  5. Step 5: Solve for x
    x = 396,665,188.52/31,965.36
  6. Step 6: Final answer
    x = 12,409.22

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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.