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Finding the Fourth Proportional to 18,827.21, 28,222.44 and 8,963.84

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Solution

The fourth proportional to 18,827.21, 28,222.44 and 8,963.84 is: 13,437.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,827.21 : 28,222.44 = 8,963.84 : x
  2. Step 2: Convert to fraction form
    18,827.21/28,222.44 = 8,963.84/x
  3. Step 3: Cross multiply
    18,827.21x = 28,222.44 × 8,963.84
  4. Step 4: Simplify right side
    18,827.21x = 252,981,295.46
  5. Step 5: Solve for x
    x = 252,981,295.46/18,827.21
  6. Step 6: Final answer
    x = 13,437.01

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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.