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Finding the Fourth Proportional to 18,616.52, 27,933.89 and 8,756.79

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Solution

The fourth proportional to 18,616.52, 27,933.89 and 8,756.79 is: 13,139.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,616.52 : 27,933.89 = 8,756.79 : x
  2. Step 2: Convert to fraction form
    18,616.52/27,933.89 = 8,756.79/x
  3. Step 3: Cross multiply
    18,616.52x = 27,933.89 × 8,756.79
  4. Step 4: Simplify right side
    18,616.52x = 244,611,164.83
  5. Step 5: Solve for x
    x = 244,611,164.83/18,616.52
  6. Step 6: Final answer
    x = 13,139.47

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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.