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Finding the Fourth Proportional to 12,421.62, 18,632.93 and 5,843.21

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Solution

The fourth proportional to 12,421.62, 18,632.93 and 5,843.21 is: 8,765.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,421.62 : 18,632.93 = 5,843.21 : x
  2. Step 2: Convert to fraction form
    12,421.62/18,632.93 = 5,843.21/x
  3. Step 3: Cross multiply
    12,421.62x = 18,632.93 × 5,843.21
  4. Step 4: Simplify right side
    12,421.62x = 108,876,000.52
  5. Step 5: Solve for x
    x = 108,876,000.52/12,421.62
  6. Step 6: Final answer
    x = 8,765.04

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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.