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Finding the Fourth Proportional to 13,449.71, 18,560.34 and 7,481.63

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Solution

The fourth proportional to 13,449.71, 18,560.34 and 7,481.63 is: 10,324.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,449.71 : 18,560.34 = 7,481.63 : x
  2. Step 2: Convert to fraction form
    13,449.71/18,560.34 = 7,481.63/x
  3. Step 3: Cross multiply
    13,449.71x = 18,560.34 × 7,481.63
  4. Step 4: Simplify right side
    13,449.71x = 138,861,642.96
  5. Step 5: Solve for x
    x = 138,861,642.96/13,449.71
  6. Step 6: Final answer
    x = 10,324.51

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Double scale
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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.