Home / 31,806.66-47,709.99-12,080.55

Finding the Fourth Proportional to 31,806.66, 47,709.99 and 12,080.55

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Solution

The fourth proportional to 31,806.66, 47,709.99 and 12,080.55 is: 18,120.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,806.66 : 47,709.99 = 12,080.55 : x
  2. Step 2: Convert to fraction form
    31,806.66/47,709.99 = 12,080.55/x
  3. Step 3: Cross multiply
    31,806.66x = 47,709.99 × 12,080.55
  4. Step 4: Simplify right side
    31,806.66x = 576,362,919.69
  5. Step 5: Solve for x
    x = 576,362,919.69/31,806.66
  6. Step 6: Final answer
    x = 18,120.83

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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.