Home / 31,811.32-47,722.57-12,091.60

Finding the Fourth Proportional to 31,811.32, 47,722.57 and 12,091.60

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Solution

The fourth proportional to 31,811.32, 47,722.57 and 12,091.60 is: 18,139.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,811.32 : 47,722.57 = 12,091.60 : x
  2. Step 2: Convert to fraction form
    31,811.32/47,722.57 = 12,091.60/x
  3. Step 3: Cross multiply
    31,811.32x = 47,722.57 × 12,091.60
  4. Step 4: Simplify right side
    31,811.32x = 577,042,227.41
  5. Step 5: Solve for x
    x = 577,042,227.41/31,811.32
  6. Step 6: Final answer
    x = 18,139.52

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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.