Home / 12,100.20-18,150.30-7,966.50

Finding the Fourth Proportional to 12,100.20, 18,150.30 and 7,966.50

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Solution

The fourth proportional to 12,100.20, 18,150.30 and 7,966.50 is: 11,949.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,100.20 : 18,150.30 = 7,966.50 : x
  2. Step 2: Convert to fraction form
    12,100.20/18,150.30 = 7,966.50/x
  3. Step 3: Cross multiply
    12,100.20x = 18,150.30 × 7,966.50
  4. Step 4: Simplify right side
    12,100.20x = 144,594,364.95
  5. Step 5: Solve for x
    x = 144,594,364.95/12,100.20
  6. Step 6: Final answer
    x = 11,949.75

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Similar ratio
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1.5x scale

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.