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Finding the Fourth Proportional to 13,344.96, 18,416.96 and 8,039.68

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Solution

The fourth proportional to 13,344.96, 18,416.96 and 8,039.68 is: 11,095.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,344.96 : 18,416.96 = 8,039.68 : x
  2. Step 2: Convert to fraction form
    13,344.96/18,416.96 = 8,039.68/x
  3. Step 3: Cross multiply
    13,344.96x = 18,416.96 × 8,039.68
  4. Step 4: Simplify right side
    13,344.96x = 148,066,464.97
  5. Step 5: Solve for x
    x = 148,066,464.97/13,344.96
  6. Step 6: Final answer
    x = 11,095.31

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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.