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Finding the Fourth Proportional to 18,914.16, 28,377 and 7,232.88

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Solution

The fourth proportional to 18,914.16, 28,377 and 7,232.88 is: 10,851.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,914.16 : 28,377 = 7,232.88 : x
  2. Step 2: Convert to fraction form
    18,914.16/28,377 = 7,232.88/x
  3. Step 3: Cross multiply
    18,914.16x = 28,377 × 7,232.88
  4. Step 4: Simplify right side
    18,914.16x = 205,247,435.76
  5. Step 5: Solve for x
    x = 205,247,435.76/18,914.16
  6. Step 6: Final answer
    x = 10,851.52

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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.