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Finding the Fourth Proportional to 18,618.08, 27,911.41 and 8,080.16

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Solution

The fourth proportional to 18,618.08, 27,911.41 and 8,080.16 is: 12,113.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,618.08 : 27,911.41 = 8,080.16 : x
  2. Step 2: Convert to fraction form
    18,618.08/27,911.41 = 8,080.16/x
  3. Step 3: Cross multiply
    18,618.08x = 27,911.41 × 8,080.16
  4. Step 4: Simplify right side
    18,618.08x = 225,528,519.07
  5. Step 5: Solve for x
    x = 225,528,519.07/18,618.08
  6. Step 6: Final answer
    x = 12,113.42

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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.