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Finding the Fourth Proportional to 12,194.40, 18,291.60 and 10,590.60

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Solution

The fourth proportional to 12,194.40, 18,291.60 and 10,590.60 is: 15,885.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,194.40 : 18,291.60 = 10,590.60 : x
  2. Step 2: Convert to fraction form
    12,194.40/18,291.60 = 10,590.60/x
  3. Step 3: Cross multiply
    12,194.40x = 18,291.60 × 10,590.60
  4. Step 4: Simplify right side
    12,194.40x = 193,719,018.96
  5. Step 5: Solve for x
    x = 193,719,018.96/12,194.40
  6. Step 6: Final answer
    x = 15,885.90

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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.