Home / 20,186.08-27,860.88-11,805.28

Finding the Fourth Proportional to 20,186.08, 27,860.88 and 11,805.28

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Solution

The fourth proportional to 20,186.08, 27,860.88 and 11,805.28 is: 16,293.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,186.08 : 27,860.88 = 11,805.28 : x
  2. Step 2: Convert to fraction form
    20,186.08/27,860.88 = 11,805.28/x
  3. Step 3: Cross multiply
    20,186.08x = 27,860.88 × 11,805.28
  4. Step 4: Simplify right side
    20,186.08x = 328,905,489.45
  5. Step 5: Solve for x
    x = 328,905,489.45/20,186.08
  6. Step 6: Final answer
    x = 16,293.68

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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.