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Finding the Fourth Proportional to 18,079.14, 27,015.08 and 13,781.10

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Solution

The fourth proportional to 18,079.14, 27,015.08 and 13,781.10 is: 20,592.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,079.14 : 27,015.08 = 13,781.10 : x
  2. Step 2: Convert to fraction form
    18,079.14/27,015.08 = 13,781.10/x
  3. Step 3: Cross multiply
    18,079.14x = 27,015.08 × 13,781.10
  4. Step 4: Simplify right side
    18,079.14x = 372,297,518.99
  5. Step 5: Solve for x
    x = 372,297,518.99/18,079.14
  6. Step 6: Final answer
    x = 20,592.66

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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.