Home / 21,188.52-31,763.88-8,031.96

Finding the Fourth Proportional to 21,188.52, 31,763.88 and 8,031.96

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Solution

The fourth proportional to 21,188.52, 31,763.88 and 8,031.96 is: 12,040.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,188.52 : 31,763.88 = 8,031.96 : x
  2. Step 2: Convert to fraction form
    21,188.52/31,763.88 = 8,031.96/x
  3. Step 3: Cross multiply
    21,188.52x = 31,763.88 × 8,031.96
  4. Step 4: Simplify right side
    21,188.52x = 255,126,213.60
  5. Step 5: Solve for x
    x = 255,126,213.60/21,188.52
  6. Step 6: Final answer
    x = 12,040.78

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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.