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Finding the Fourth Proportional to 13,069.89, 18,034.92 and 7,405.29

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Solution

The fourth proportional to 13,069.89, 18,034.92 and 7,405.29 is: 10,218.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,069.89 : 18,034.92 = 7,405.29 : x
  2. Step 2: Convert to fraction form
    13,069.89/18,034.92 = 7,405.29/x
  3. Step 3: Cross multiply
    13,069.89x = 18,034.92 × 7,405.29
  4. Step 4: Simplify right side
    13,069.89x = 133,553,812.73
  5. Step 5: Solve for x
    x = 133,553,812.73/13,069.89
  6. Step 6: Final answer
    x = 10,218.43

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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.