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Finding the Fourth Proportional to 18,548.70, 27,801.45 and 7,449.90

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Solution

The fourth proportional to 18,548.70, 27,801.45 and 7,449.90 is: 11,166.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,548.70 : 27,801.45 = 7,449.90 : x
  2. Step 2: Convert to fraction form
    18,548.70/27,801.45 = 7,449.90/x
  3. Step 3: Cross multiply
    18,548.70x = 27,801.45 × 7,449.90
  4. Step 4: Simplify right side
    18,548.70x = 207,118,022.36
  5. Step 5: Solve for x
    x = 207,118,022.36/18,548.70
  6. Step 6: Final answer
    x = 11,166.17

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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.