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Finding the Fourth Proportional to 18,441.34, 27,658.22 and 5,290.80

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Solution

The fourth proportional to 18,441.34, 27,658.22 and 5,290.80 is: 7,935.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,441.34 : 27,658.22 = 5,290.80 : x
  2. Step 2: Convert to fraction form
    18,441.34/27,658.22 = 5,290.80/x
  3. Step 3: Cross multiply
    18,441.34x = 27,658.22 × 5,290.80
  4. Step 4: Simplify right side
    18,441.34x = 146,334,110.38
  5. Step 5: Solve for x
    x = 146,334,110.38/18,441.34
  6. Step 6: Final answer
    x = 7,935.11

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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.