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Finding the Fourth Proportional to 18,548.48, 27,790.11 and 15,448.34

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Solution

The fourth proportional to 18,548.48, 27,790.11 and 15,448.34 is: 23,145.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,548.48 : 27,790.11 = 15,448.34 : x
  2. Step 2: Convert to fraction form
    18,548.48/27,790.11 = 15,448.34/x
  3. Step 3: Cross multiply
    18,548.48x = 27,790.11 × 15,448.34
  4. Step 4: Simplify right side
    18,548.48x = 429,310,928.97
  5. Step 5: Solve for x
    x = 429,310,928.97/18,548.48
  6. Step 6: Final answer
    x = 23,145.35

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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.