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Finding the Fourth Proportional to 15,163.80, 20,926.08 and 9,193.92

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Solution

The fourth proportional to 15,163.80, 20,926.08 and 9,193.92 is: 12,687.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,163.80 : 20,926.08 = 9,193.92 : x
  2. Step 2: Convert to fraction form
    15,163.80/20,926.08 = 9,193.92/x
  3. Step 3: Cross multiply
    15,163.80x = 20,926.08 × 9,193.92
  4. Step 4: Simplify right side
    15,163.80x = 192,392,705.43
  5. Step 5: Solve for x
    x = 192,392,705.43/15,163.80
  6. Step 6: Final answer
    x = 12,687.63

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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.