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Finding the Fourth Proportional to 15,163.49, 20,926.49 and 8,448.89

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Solution

The fourth proportional to 15,163.49, 20,926.49 and 8,448.89 is: 11,659.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,163.49 : 20,926.49 = 8,448.89 : x
  2. Step 2: Convert to fraction form
    15,163.49/20,926.49 = 8,448.89/x
  3. Step 3: Cross multiply
    15,163.49x = 20,926.49 × 8,448.89
  4. Step 4: Simplify right side
    15,163.49x = 176,805,465.22
  5. Step 5: Solve for x
    x = 176,805,465.22/15,163.49
  6. Step 6: Final answer
    x = 11,659.94

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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.