Home / 20,274.36-27,991.79-18,146.21

Finding the Fourth Proportional to 20,274.36, 27,991.79 and 18,146.21

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Solution

The fourth proportional to 20,274.36, 27,991.79 and 18,146.21 is: 25,053.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,274.36 : 27,991.79 = 18,146.21 : x
  2. Step 2: Convert to fraction form
    20,274.36/27,991.79 = 18,146.21/x
  3. Step 3: Cross multiply
    20,274.36x = 27,991.79 × 18,146.21
  4. Step 4: Simplify right side
    20,274.36x = 507,944,899.62
  5. Step 5: Solve for x
    x = 507,944,899.62/20,274.36
  6. Step 6: Final answer
    x = 25,053.56

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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.