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Finding the Fourth Proportional to 18,443.62, 27,628.44 and 8,569.18

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Solution

The fourth proportional to 18,443.62, 27,628.44 and 8,569.18 is: 12,836.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,443.62 : 27,628.44 = 8,569.18 : x
  2. Step 2: Convert to fraction form
    18,443.62/27,628.44 = 8,569.18/x
  3. Step 3: Cross multiply
    18,443.62x = 27,628.44 × 8,569.18
  4. Step 4: Simplify right side
    18,443.62x = 236,753,075.48
  5. Step 5: Solve for x
    x = 236,753,075.48/18,443.62
  6. Step 6: Final answer
    x = 12,836.58

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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.