Home / 18,665.20-27,991.28-5,514.08

Finding the Fourth Proportional to 18,665.20, 27,991.28 and 5,514.08

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Solution

The fourth proportional to 18,665.20, 27,991.28 and 5,514.08 is: 8,269.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,665.20 : 27,991.28 = 5,514.08 : x
  2. Step 2: Convert to fraction form
    18,665.20/27,991.28 = 5,514.08/x
  3. Step 3: Cross multiply
    18,665.20x = 27,991.28 × 5,514.08
  4. Step 4: Simplify right side
    18,665.20x = 154,346,157.22
  5. Step 5: Solve for x
    x = 154,346,157.22/18,665.20
  6. Step 6: Final answer
    x = 8,269.19

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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.