Home / 19,704.81-27,191.56-11,205.78

Finding the Fourth Proportional to 19,704.81, 27,191.56 and 11,205.78

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Solution

The fourth proportional to 19,704.81, 27,191.56 and 11,205.78 is: 15,463.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,704.81 : 27,191.56 = 11,205.78 : x
  2. Step 2: Convert to fraction form
    19,704.81/27,191.56 = 11,205.78/x
  3. Step 3: Cross multiply
    19,704.81x = 27,191.56 × 11,205.78
  4. Step 4: Simplify right side
    19,704.81x = 304,702,611.20
  5. Step 5: Solve for x
    x = 304,702,611.20/19,704.81
  6. Step 6: Final answer
    x = 15,463.36

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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.