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Finding the Fourth Proportional to 15,027.84, 20,740.89 and 8,743.86

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Solution

The fourth proportional to 15,027.84, 20,740.89 and 8,743.86 is: 12,067.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,027.84 : 20,740.89 = 8,743.86 : x
  2. Step 2: Convert to fraction form
    15,027.84/20,740.89 = 8,743.86/x
  3. Step 3: Cross multiply
    15,027.84x = 20,740.89 × 8,743.86
  4. Step 4: Simplify right side
    15,027.84x = 181,355,438.44
  5. Step 5: Solve for x
    x = 181,355,438.44/15,027.84
  6. Step 6: Final answer
    x = 12,067.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.