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Finding the Fourth Proportional to 18,309.97, 27,462.52 and 5,163.40

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Solution

The fourth proportional to 18,309.97, 27,462.52 and 5,163.40 is: 7,744.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,309.97 : 27,462.52 = 5,163.40 : x
  2. Step 2: Convert to fraction form
    18,309.97/27,462.52 = 5,163.40/x
  3. Step 3: Cross multiply
    18,309.97x = 27,462.52 × 5,163.40
  4. Step 4: Simplify right side
    18,309.97x = 141,799,975.77
  5. Step 5: Solve for x
    x = 141,799,975.77/18,309.97
  6. Step 6: Final answer
    x = 7,744.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.