Home / 19,660.62-27,131.49-13,695.60

Finding the Fourth Proportional to 19,660.62, 27,131.49 and 13,695.60

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Solution

The fourth proportional to 19,660.62, 27,131.49 and 13,695.60 is: 18,899.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,660.62 : 27,131.49 = 13,695.60 : x
  2. Step 2: Convert to fraction form
    19,660.62/27,131.49 = 13,695.60/x
  3. Step 3: Cross multiply
    19,660.62x = 27,131.49 × 13,695.60
  4. Step 4: Simplify right side
    19,660.62x = 371,582,034.44
  5. Step 5: Solve for x
    x = 371,582,034.44/19,660.62
  6. Step 6: Final answer
    x = 18,899.81

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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.