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Finding the Fourth Proportional to 18,424.64, 27,636.82 and 8,558.44

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Solution

The fourth proportional to 18,424.64, 27,636.82 and 8,558.44 is: 12,837.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,424.64 : 27,636.82 = 8,558.44 : x
  2. Step 2: Convert to fraction form
    18,424.64/27,636.82 = 8,558.44/x
  3. Step 3: Cross multiply
    18,424.64x = 27,636.82 × 8,558.44
  4. Step 4: Simplify right side
    18,424.64x = 236,528,065.76
  5. Step 5: Solve for x
    x = 236,528,065.76/18,424.64
  6. Step 6: Final answer
    x = 12,837.59

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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.