Home / 18,079.64-27,015.83-13,781.60

Finding the Fourth Proportional to 18,079.64, 27,015.83 and 13,781.60

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Solution

The fourth proportional to 18,079.64, 27,015.83 and 13,781.60 is: 20,593.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,079.64 : 27,015.83 = 13,781.60 : x
  2. Step 2: Convert to fraction form
    18,079.64/27,015.83 = 13,781.60/x
  3. Step 3: Cross multiply
    18,079.64x = 27,015.83 × 13,781.60
  4. Step 4: Simplify right side
    18,079.64x = 372,321,293.82
  5. Step 5: Solve for x
    x = 372,321,293.82/18,079.64
  6. Step 6: Final answer
    x = 20,593.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.