Home / 31,991.24-47,986.86-11,209.88

Finding the Fourth Proportional to 31,991.24, 47,986.86 and 11,209.88

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Solution

The fourth proportional to 31,991.24, 47,986.86 and 11,209.88 is: 16,814.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,991.24 : 47,986.86 = 11,209.88 : x
  2. Step 2: Convert to fraction form
    31,991.24/47,986.86 = 11,209.88/x
  3. Step 3: Cross multiply
    31,991.24x = 47,986.86 × 11,209.88
  4. Step 4: Simplify right side
    31,991.24x = 537,926,942.18
  5. Step 5: Solve for x
    x = 537,926,942.18/31,991.24
  6. Step 6: Final answer
    x = 16,814.82

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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.