Home / 18,716.59-25,805.55-11,991.16

Finding the Fourth Proportional to 18,716.59, 25,805.55 and 11,991.16

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Solution

The fourth proportional to 18,716.59, 25,805.55 and 11,991.16 is: 16,532.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,716.59 : 25,805.55 = 11,991.16 : x
  2. Step 2: Convert to fraction form
    18,716.59/25,805.55 = 11,991.16/x
  3. Step 3: Cross multiply
    18,716.59x = 25,805.55 × 11,991.16
  4. Step 4: Simplify right side
    18,716.59x = 309,438,478.94
  5. Step 5: Solve for x
    x = 309,438,478.94/18,716.59
  6. Step 6: Final answer
    x = 16,532.84

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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.