Home / 19,986.75-27,581.72-12,534.75

Finding the Fourth Proportional to 19,986.75, 27,581.72 and 12,534.75

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Solution

The fourth proportional to 19,986.75, 27,581.72 and 12,534.75 is: 17,297.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,986.75 : 27,581.72 = 12,534.75 : x
  2. Step 2: Convert to fraction form
    19,986.75/27,581.72 = 12,534.75/x
  3. Step 3: Cross multiply
    19,986.75x = 27,581.72 × 12,534.75
  4. Step 4: Simplify right side
    19,986.75x = 345,729,902.10
  5. Step 5: Solve for x
    x = 345,729,902.10/19,986.75
  6. Step 6: Final answer
    x = 17,297.96

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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.