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Finding the Fourth Proportional to 18,635.52, 27,943.65 and 5,486.19

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Solution

The fourth proportional to 18,635.52, 27,943.65 and 5,486.19 is: 8,226.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,635.52 : 27,943.65 = 5,486.19 : x
  2. Step 2: Convert to fraction form
    18,635.52/27,943.65 = 5,486.19/x
  3. Step 3: Cross multiply
    18,635.52x = 27,943.65 × 5,486.19
  4. Step 4: Simplify right side
    18,635.52x = 153,304,173.19
  5. Step 5: Solve for x
    x = 153,304,173.19/18,635.52
  6. Step 6: Final answer
    x = 8,226.45

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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.