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Finding the Fourth Proportional to 18,231.40, 27,368.70 and 18,101.80

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Solution

The fourth proportional to 18,231.40, 27,368.70 and 18,101.80 is: 27,174.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,231.40 : 27,368.70 = 18,101.80 : x
  2. Step 2: Convert to fraction form
    18,231.40/27,368.70 = 18,101.80/x
  3. Step 3: Cross multiply
    18,231.40x = 27,368.70 × 18,101.80
  4. Step 4: Simplify right side
    18,231.40x = 495,422,733.66
  5. Step 5: Solve for x
    x = 495,422,733.66/18,231.40
  6. Step 6: Final answer
    x = 27,174.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.