Home / 19,986.75-27,581.72-11,603.25

Finding the Fourth Proportional to 19,986.75, 27,581.72 and 11,603.25

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Solution

The fourth proportional to 19,986.75, 27,581.72 and 11,603.25 is: 16,012.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,986.75 : 27,581.72 = 11,603.25 : x
  2. Step 2: Convert to fraction form
    19,986.75/27,581.72 = 11,603.25/x
  3. Step 3: Cross multiply
    19,986.75x = 27,581.72 × 11,603.25
  4. Step 4: Simplify right side
    19,986.75x = 320,037,534.57
  5. Step 5: Solve for x
    x = 320,037,534.57/19,986.75
  6. Step 6: Final answer
    x = 16,012.49

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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.