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Finding the Fourth Proportional to 18,488.28, 27,748.89 and 8,633.01

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Solution

The fourth proportional to 18,488.28, 27,748.89 and 8,633.01 is: 12,957.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,488.28 : 27,748.89 = 8,633.01 : x
  2. Step 2: Convert to fraction form
    18,488.28/27,748.89 = 8,633.01/x
  3. Step 3: Cross multiply
    18,488.28x = 27,748.89 × 8,633.01
  4. Step 4: Simplify right side
    18,488.28x = 239,556,444.86
  5. Step 5: Solve for x
    x = 239,556,444.86/18,488.28
  6. Step 6: Final answer
    x = 12,957.21

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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.