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Finding the Fourth Proportional to 13,079.21, 18,048.92 and 7,414.47

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Solution

The fourth proportional to 13,079.21, 18,048.92 and 7,414.47 is: 10,231.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,079.21 : 18,048.92 = 7,414.47 : x
  2. Step 2: Convert to fraction form
    13,079.21/18,048.92 = 7,414.47/x
  3. Step 3: Cross multiply
    13,079.21x = 18,048.92 × 7,414.47
  4. Step 4: Simplify right side
    13,079.21x = 133,823,175.87
  5. Step 5: Solve for x
    x = 133,823,175.87/13,079.21
  6. Step 6: Final answer
    x = 10,231.75

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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.