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Finding the Fourth Proportional to 18,647.90, 27,972.03 and 5,500.52

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Solution

The fourth proportional to 18,647.90, 27,972.03 and 5,500.52 is: 8,250.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,647.90 : 27,972.03 = 5,500.52 : x
  2. Step 2: Convert to fraction form
    18,647.90/27,972.03 = 5,500.52/x
  3. Step 3: Cross multiply
    18,647.90x = 27,972.03 × 5,500.52
  4. Step 4: Simplify right side
    18,647.90x = 153,860,710.46
  5. Step 5: Solve for x
    x = 153,860,710.46/18,647.90
  6. Step 6: Final answer
    x = 8,250.83

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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.