Home / 20,268.77-27,962.85-13,543.75

Finding the Fourth Proportional to 20,268.77, 27,962.85 and 13,543.75

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Solution

The fourth proportional to 20,268.77, 27,962.85 and 13,543.75 is: 18,684.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,268.77 : 27,962.85 = 13,543.75 : x
  2. Step 2: Convert to fraction form
    20,268.77/27,962.85 = 13,543.75/x
  3. Step 3: Cross multiply
    20,268.77x = 27,962.85 × 13,543.75
  4. Step 4: Simplify right side
    20,268.77x = 378,721,856.78
  5. Step 5: Solve for x
    x = 378,721,856.78/20,268.77
  6. Step 6: Final answer
    x = 18,684.99

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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.