Home / 31,786.25-47,687.88-11,009.75

Finding the Fourth Proportional to 31,786.25, 47,687.88 and 11,009.75

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Solution

The fourth proportional to 31,786.25, 47,687.88 and 11,009.75 is: 16,517.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,786.25 : 47,687.88 = 11,009.75 : x
  2. Step 2: Convert to fraction form
    31,786.25/47,687.88 = 11,009.75/x
  3. Step 3: Cross multiply
    31,786.25x = 47,687.88 × 11,009.75
  4. Step 4: Simplify right side
    31,786.25x = 525,031,636.83
  5. Step 5: Solve for x
    x = 525,031,636.83/31,786.25
  6. Step 6: Final answer
    x = 16,517.57

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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.