Home / 20,268.01-27,961.81-13,542.99

Finding the Fourth Proportional to 20,268.01, 27,961.81 and 13,542.99

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Solution

The fourth proportional to 20,268.01, 27,961.81 and 13,542.99 is: 18,683.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,268.01 : 27,961.81 = 13,542.99 : x
  2. Step 2: Convert to fraction form
    20,268.01/27,961.81 = 13,542.99/x
  3. Step 3: Cross multiply
    20,268.01x = 27,961.81 × 13,542.99
  4. Step 4: Simplify right side
    20,268.01x = 378,686,513.21
  5. Step 5: Solve for x
    x = 378,686,513.21/20,268.01
  6. Step 6: Final answer
    x = 18,683.95

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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.