Home / 13,728.91-20,544.15-11,886.37

Finding the Fourth Proportional to 13,728.91, 20,544.15 and 11,886.37

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Solution

The fourth proportional to 13,728.91, 20,544.15 and 11,886.37 is: 17,786.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,728.91 : 20,544.15 = 11,886.37 : x
  2. Step 2: Convert to fraction form
    13,728.91/20,544.15 = 11,886.37/x
  3. Step 3: Cross multiply
    13,728.91x = 20,544.15 × 11,886.37
  4. Step 4: Simplify right side
    13,728.91x = 244,195,368.24
  5. Step 5: Solve for x
    x = 244,195,368.24/13,728.91
  6. Step 6: Final answer
    x = 17,786.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.