Home / 18,665.56-27,998.16-5,518.18

Finding the Fourth Proportional to 18,665.56, 27,998.16 and 5,518.18

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Solution

The fourth proportional to 18,665.56, 27,998.16 and 5,518.18 is: 8,277.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,665.56 : 27,998.16 = 5,518.18 : x
  2. Step 2: Convert to fraction form
    18,665.56/27,998.16 = 5,518.18/x
  3. Step 3: Cross multiply
    18,665.56x = 27,998.16 × 5,518.18
  4. Step 4: Simplify right side
    18,665.56x = 154,498,886.55
  5. Step 5: Solve for x
    x = 154,498,886.55/18,665.56
  6. Step 6: Final answer
    x = 8,277.22

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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.