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Finding the Fourth Proportional to 18,636.52, 27,945.15 and 5,487.19

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Solution

The fourth proportional to 18,636.52, 27,945.15 and 5,487.19 is: 8,227.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,636.52 : 27,945.15 = 5,487.19 : x
  2. Step 2: Convert to fraction form
    18,636.52/27,945.15 = 5,487.19/x
  3. Step 3: Cross multiply
    18,636.52x = 27,945.15 × 5,487.19
  4. Step 4: Simplify right side
    18,636.52x = 153,340,347.63
  5. Step 5: Solve for x
    x = 153,340,347.63/18,636.52
  6. Step 6: Final answer
    x = 8,227.95

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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.