Home / 31,728.75-47,599.80-12,006.87

Finding the Fourth Proportional to 31,728.75, 47,599.80 and 12,006.87

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Solution

The fourth proportional to 31,728.75, 47,599.80 and 12,006.87 is: 18,012.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,728.75 : 47,599.80 = 12,006.87 : x
  2. Step 2: Convert to fraction form
    31,728.75/47,599.80 = 12,006.87/x
  3. Step 3: Cross multiply
    31,728.75x = 47,599.80 × 12,006.87
  4. Step 4: Simplify right side
    31,728.75x = 571,524,610.63
  5. Step 5: Solve for x
    x = 571,524,610.63/31,728.75
  6. Step 6: Final answer
    x = 18,012.83

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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.