Home / 21,796.13-30,078.66-11,860.13

Finding the Fourth Proportional to 21,796.13, 30,078.66 and 11,860.13

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Solution

The fourth proportional to 21,796.13, 30,078.66 and 11,860.13 is: 16,366.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,796.13 : 30,078.66 = 11,860.13 : x
  2. Step 2: Convert to fraction form
    21,796.13/30,078.66 = 11,860.13/x
  3. Step 3: Cross multiply
    21,796.13x = 30,078.66 × 11,860.13
  4. Step 4: Simplify right side
    21,796.13x = 356,736,667.43
  5. Step 5: Solve for x
    x = 356,736,667.43/21,796.13
  6. Step 6: Final answer
    x = 16,366.98

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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.