Home / 18,519.71-27,751.68-11,116.08

Finding the Fourth Proportional to 18,519.71, 27,751.68 and 11,116.08

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Solution

The fourth proportional to 18,519.71, 27,751.68 and 11,116.08 is: 16,657.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,519.71 : 27,751.68 = 11,116.08 : x
  2. Step 2: Convert to fraction form
    18,519.71/27,751.68 = 11,116.08/x
  3. Step 3: Cross multiply
    18,519.71x = 27,751.68 × 11,116.08
  4. Step 4: Simplify right side
    18,519.71x = 308,489,895.01
  5. Step 5: Solve for x
    x = 308,489,895.01/18,519.71
  6. Step 6: Final answer
    x = 16,657.39

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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.