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Finding the Fourth Proportional to 12,194.40, 18,291.60 and 12,064.80

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Solution

The fourth proportional to 12,194.40, 18,291.60 and 12,064.80 is: 18,097.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,194.40 : 18,291.60 = 12,064.80 : x
  2. Step 2: Convert to fraction form
    12,194.40/18,291.60 = 12,064.80/x
  3. Step 3: Cross multiply
    12,194.40x = 18,291.60 × 12,064.80
  4. Step 4: Simplify right side
    12,194.40x = 220,684,495.68
  5. Step 5: Solve for x
    x = 220,684,495.68/12,194.40
  6. Step 6: Final answer
    x = 18,097.20

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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.