Home / 31,856.76-47,786.76-12,131.64

Finding the Fourth Proportional to 31,856.76, 47,786.76 and 12,131.64

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Solution

The fourth proportional to 31,856.76, 47,786.76 and 12,131.64 is: 18,198.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,856.76 : 47,786.76 = 12,131.64 : x
  2. Step 2: Convert to fraction form
    31,856.76/47,786.76 = 12,131.64/x
  3. Step 3: Cross multiply
    31,856.76x = 47,786.76 × 12,131.64
  4. Step 4: Simplify right side
    31,856.76x = 579,731,769.09
  5. Step 5: Solve for x
    x = 579,731,769.09/31,856.76
  6. Step 6: Final answer
    x = 18,198.08

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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.