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Finding the Fourth Proportional to 18,734.17, 28,102.33 and 7,047.49

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Solution

The fourth proportional to 18,734.17, 28,102.33 and 7,047.49 is: 10,571.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,734.17 : 28,102.33 = 7,047.49 : x
  2. Step 2: Convert to fraction form
    18,734.17/28,102.33 = 7,047.49/x
  3. Step 3: Cross multiply
    18,734.17x = 28,102.33 × 7,047.49
  4. Step 4: Simplify right side
    18,734.17x = 198,050,889.65
  5. Step 5: Solve for x
    x = 198,050,889.65/18,734.17
  6. Step 6: Final answer
    x = 10,571.64

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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.