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Finding the Fourth Proportional to 18,537.95, 27,809.63 and 5,388.61

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Solution

The fourth proportional to 18,537.95, 27,809.63 and 5,388.61 is: 8,083.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,537.95 : 27,809.63 = 5,388.61 : x
  2. Step 2: Convert to fraction form
    18,537.95/27,809.63 = 5,388.61/x
  3. Step 3: Cross multiply
    18,537.95x = 27,809.63 × 5,388.61
  4. Step 4: Simplify right side
    18,537.95x = 149,855,250.31
  5. Step 5: Solve for x
    x = 149,855,250.31/18,537.95
  6. Step 6: Final answer
    x = 8,083.70

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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.