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Finding the Fourth Proportional to 18,704.40, 27,910.38 and 18,259.80

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Solution

The fourth proportional to 18,704.40, 27,910.38 and 18,259.80 is: 27,246.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,704.40 : 27,910.38 = 18,259.80 : x
  2. Step 2: Convert to fraction form
    18,704.40/27,910.38 = 18,259.80/x
  3. Step 3: Cross multiply
    18,704.40x = 27,910.38 × 18,259.80
  4. Step 4: Simplify right side
    18,704.40x = 509,637,956.72
  5. Step 5: Solve for x
    x = 509,637,956.72/18,704.40
  6. Step 6: Final answer
    x = 27,246.96

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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.