Home / 19,977.92-27,540.80-13,991.04

Finding the Fourth Proportional to 19,977.92, 27,540.80 and 13,991.04

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Solution

The fourth proportional to 19,977.92, 27,540.80 and 13,991.04 is: 19,287.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,977.92 : 27,540.80 = 13,991.04 : x
  2. Step 2: Convert to fraction form
    19,977.92/27,540.80 = 13,991.04/x
  3. Step 3: Cross multiply
    19,977.92x = 27,540.80 × 13,991.04
  4. Step 4: Simplify right side
    19,977.92x = 385,324,434.43
  5. Step 5: Solve for x
    x = 385,324,434.43/19,977.92
  6. Step 6: Final answer
    x = 19,287.52

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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.