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Finding the Fourth Proportional to 18,609.18, 27,910.89 and 5,460.18

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Solution

The fourth proportional to 18,609.18, 27,910.89 and 5,460.18 is: 8,189.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,609.18 : 27,910.89 = 5,460.18 : x
  2. Step 2: Convert to fraction form
    18,609.18/27,910.89 = 5,460.18/x
  3. Step 3: Cross multiply
    18,609.18x = 27,910.89 × 5,460.18
  4. Step 4: Simplify right side
    18,609.18x = 152,398,483.36
  5. Step 5: Solve for x
    x = 152,398,483.36/18,609.18
  6. Step 6: Final answer
    x = 8,189.42

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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.