Home / 19,690.05-27,171.22-11,191.03

Finding the Fourth Proportional to 19,690.05, 27,171.22 and 11,191.03

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Solution

The fourth proportional to 19,690.05, 27,171.22 and 11,191.03 is: 15,443.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,690.05 : 27,171.22 = 11,191.03 : x
  2. Step 2: Convert to fraction form
    19,690.05/27,171.22 = 11,191.03/x
  3. Step 3: Cross multiply
    19,690.05x = 27,171.22 × 11,191.03
  4. Step 4: Simplify right side
    19,690.05x = 304,073,938.16
  5. Step 5: Solve for x
    x = 304,073,938.16/19,690.05
  6. Step 6: Final answer
    x = 15,443.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.