Home / 31,986.54-47,976.12-8,611.14

Finding the Fourth Proportional to 31,986.54, 47,976.12 and 8,611.14

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Solution

The fourth proportional to 31,986.54, 47,976.12 and 8,611.14 is: 12,915.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,986.54 : 47,976.12 = 8,611.14 : x
  2. Step 2: Convert to fraction form
    31,986.54/47,976.12 = 8,611.14/x
  3. Step 3: Cross multiply
    31,986.54x = 47,976.12 × 8,611.14
  4. Step 4: Simplify right side
    31,986.54x = 413,129,085.98
  5. Step 5: Solve for x
    x = 413,129,085.98/31,986.54
  6. Step 6: Final answer
    x = 12,915.72

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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.