Home / 31,679.75-47,530.17-10,621.88

Finding the Fourth Proportional to 31,679.75, 47,530.17 and 10,621.88

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Solution

The fourth proportional to 31,679.75, 47,530.17 and 10,621.88 is: 15,936.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,679.75 : 47,530.17 = 10,621.88 : x
  2. Step 2: Convert to fraction form
    31,679.75/47,530.17 = 10,621.88/x
  3. Step 3: Cross multiply
    31,679.75x = 47,530.17 × 10,621.88
  4. Step 4: Simplify right side
    31,679.75x = 504,859,524.47
  5. Step 5: Solve for x
    x = 504,859,524.47/31,679.75
  6. Step 6: Final answer
    x = 15,936.35

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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.