Home / 13,308.60-18,365.21-8,002.39

Finding the Fourth Proportional to 13,308.60, 18,365.21 and 8,002.39

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Solution

The fourth proportional to 13,308.60, 18,365.21 and 8,002.39 is: 11,042.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,308.60 : 18,365.21 = 8,002.39 : x
  2. Step 2: Convert to fraction form
    13,308.60/18,365.21 = 8,002.39/x
  3. Step 3: Cross multiply
    13,308.60x = 18,365.21 × 8,002.39
  4. Step 4: Simplify right side
    13,308.60x = 146,965,572.85
  5. Step 5: Solve for x
    x = 146,965,572.85/13,308.60
  6. Step 6: Final answer
    x = 11,042.90

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.