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Finding the Fourth Proportional to 12,214.40, 18,321.60 and 8,059.10

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Solution

The fourth proportional to 12,214.40, 18,321.60 and 8,059.10 is: 12,088.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,214.40 : 18,321.60 = 8,059.10 : x
  2. Step 2: Convert to fraction form
    12,214.40/18,321.60 = 8,059.10/x
  3. Step 3: Cross multiply
    12,214.40x = 18,321.60 × 8,059.10
  4. Step 4: Simplify right side
    12,214.40x = 147,655,606.56
  5. Step 5: Solve for x
    x = 147,655,606.56/12,214.40
  6. Step 6: Final answer
    x = 12,088.65

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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.