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Finding the Fourth Proportional to 13,371.61, 18,447.03 and 8,063.48

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Solution

The fourth proportional to 13,371.61, 18,447.03 and 8,063.48 is: 11,124.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,371.61 : 18,447.03 = 8,063.48 : x
  2. Step 2: Convert to fraction form
    13,371.61/18,447.03 = 8,063.48/x
  3. Step 3: Cross multiply
    13,371.61x = 18,447.03 × 8,063.48
  4. Step 4: Simplify right side
    13,371.61x = 148,747,124.91
  5. Step 5: Solve for x
    x = 148,747,124.91/13,371.61
  6. Step 6: Final answer
    x = 11,124.10

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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.