Home / 20,268.71-27,962.79-13,543.68

Finding the Fourth Proportional to 20,268.71, 27,962.79 and 13,543.68

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Solution

The fourth proportional to 20,268.71, 27,962.79 and 13,543.68 is: 18,684.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,268.71 : 27,962.79 = 13,543.68 : x
  2. Step 2: Convert to fraction form
    20,268.71/27,962.79 = 13,543.68/x
  3. Step 3: Cross multiply
    20,268.71x = 27,962.79 × 13,543.68
  4. Step 4: Simplify right side
    20,268.71x = 378,719,079.67
  5. Step 5: Solve for x
    x = 378,719,079.67/20,268.71
  6. Step 6: Final answer
    x = 18,684.92

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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.