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Finding the Fourth Proportional to 18,933.48, 28,384.02 and 7,255.08

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Solution

The fourth proportional to 18,933.48, 28,384.02 and 7,255.08 is: 10,876.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,933.48 : 28,384.02 = 7,255.08 : x
  2. Step 2: Convert to fraction form
    18,933.48/28,384.02 = 7,255.08/x
  3. Step 3: Cross multiply
    18,933.48x = 28,384.02 × 7,255.08
  4. Step 4: Simplify right side
    18,933.48x = 205,928,335.82
  5. Step 5: Solve for x
    x = 205,928,335.82/18,933.48
  6. Step 6: Final answer
    x = 10,876.41

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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.