Home / 20,268.03-27,961.82-13,543.00

Finding the Fourth Proportional to 20,268.03, 27,961.82 and 13,543.00

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Solution

The fourth proportional to 20,268.03, 27,961.82 and 13,543.00 is: 18,683.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,268.03 : 27,961.82 = 13,543.00 : x
  2. Step 2: Convert to fraction form
    20,268.03/27,961.82 = 13,543.00/x
  3. Step 3: Cross multiply
    20,268.03x = 27,961.82 × 13,543.00
  4. Step 4: Simplify right side
    20,268.03x = 378,686,997.07
  5. Step 5: Solve for x
    x = 378,686,997.07/20,268.03
  6. Step 6: Final answer
    x = 18,683.96

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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.