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Finding the Fourth Proportional to 18,118.58, 27,178.47 and 5,468.90

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Solution

The fourth proportional to 18,118.58, 27,178.47 and 5,468.90 is: 8,203.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,118.58 : 27,178.47 = 5,468.90 : x
  2. Step 2: Convert to fraction form
    18,118.58/27,178.47 = 5,468.90/x
  3. Step 3: Cross multiply
    18,118.58x = 27,178.47 × 5,468.90
  4. Step 4: Simplify right side
    18,118.58x = 148,636,334.58
  5. Step 5: Solve for x
    x = 148,636,334.58/18,118.58
  6. Step 6: Final answer
    x = 8,203.53

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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.