Home / 20,266.20-27,979.02-13,902.03

Finding the Fourth Proportional to 20,266.20, 27,979.02 and 13,902.03

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Solution

The fourth proportional to 20,266.20, 27,979.02 and 13,902.03 is: 19,192.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,266.20 : 27,979.02 = 13,902.03 : x
  2. Step 2: Convert to fraction form
    20,266.20/27,979.02 = 13,902.03/x
  3. Step 3: Cross multiply
    20,266.20x = 27,979.02 × 13,902.03
  4. Step 4: Simplify right side
    20,266.20x = 388,965,175.41
  5. Step 5: Solve for x
    x = 388,965,175.41/20,266.20
  6. Step 6: Final answer
    x = 19,192.80

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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.