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Finding the Fourth Proportional to 13,481.60, 18,604.96 and 7,512.96

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Solution

The fourth proportional to 13,481.60, 18,604.96 and 7,512.96 is: 10,368.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,481.60 : 18,604.96 = 7,512.96 : x
  2. Step 2: Convert to fraction form
    13,481.60/18,604.96 = 7,512.96/x
  3. Step 3: Cross multiply
    13,481.60x = 18,604.96 × 7,512.96
  4. Step 4: Simplify right side
    13,481.60x = 139,778,320.28
  5. Step 5: Solve for x
    x = 139,778,320.28/13,481.60
  6. Step 6: Final answer
    x = 10,368.08

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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.