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Finding the Fourth Proportional to 18,277.20, 27,415.80 and 14,518.80

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Solution

The fourth proportional to 18,277.20, 27,415.80 and 14,518.80 is: 21,778.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,277.20 : 27,415.80 = 14,518.80 : x
  2. Step 2: Convert to fraction form
    18,277.20/27,415.80 = 14,518.80/x
  3. Step 3: Cross multiply
    18,277.20x = 27,415.80 × 14,518.80
  4. Step 4: Simplify right side
    18,277.20x = 398,044,517.04
  5. Step 5: Solve for x
    x = 398,044,517.04/18,277.20
  6. Step 6: Final answer
    x = 21,778.20

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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.