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Finding the Fourth Proportional to 18,636.95, 27,957.24 and 5,310.53

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Solution

The fourth proportional to 18,636.95, 27,957.24 and 5,310.53 is: 7,966.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,636.95 : 27,957.24 = 5,310.53 : x
  2. Step 2: Convert to fraction form
    18,636.95/27,957.24 = 5,310.53/x
  3. Step 3: Cross multiply
    18,636.95x = 27,957.24 × 5,310.53
  4. Step 4: Simplify right side
    18,636.95x = 148,467,726.79
  5. Step 5: Solve for x
    x = 148,467,726.79/18,636.95
  6. Step 6: Final answer
    x = 7,966.31

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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.