Home / 19,991.28-27,589.59-11,496.15

Finding the Fourth Proportional to 19,991.28, 27,589.59 and 11,496.15

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Solution

The fourth proportional to 19,991.28, 27,589.59 and 11,496.15 is: 15,865.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,991.28 : 27,589.59 = 11,496.15 : x
  2. Step 2: Convert to fraction form
    19,991.28/27,589.59 = 11,496.15/x
  3. Step 3: Cross multiply
    19,991.28x = 27,589.59 × 11,496.15
  4. Step 4: Simplify right side
    19,991.28x = 317,174,065.08
  5. Step 5: Solve for x
    x = 317,174,065.08/19,991.28
  6. Step 6: Final answer
    x = 15,865.62

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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.