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Finding the Fourth Proportional to 9,992.60, 14,988.90 and 5,609.96

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Solution

The fourth proportional to 9,992.60, 14,988.90 and 5,609.96 is: 8,414.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,992.60 : 14,988.90 = 5,609.96 : x
  2. Step 2: Convert to fraction form
    9,992.60/14,988.90 = 5,609.96/x
  3. Step 3: Cross multiply
    9,992.60x = 14,988.90 × 5,609.96
  4. Step 4: Simplify right side
    9,992.60x = 84,087,129.44
  5. Step 5: Solve for x
    x = 84,087,129.44/9,992.60
  6. Step 6: Final answer
    x = 8,414.94

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Double scale
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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.