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Finding the Fourth Proportional to 12,793.86, 19,187.55 and 5,769.90

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Solution

The fourth proportional to 12,793.86, 19,187.55 and 5,769.90 is: 8,653.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,793.86 : 19,187.55 = 5,769.90 : x
  2. Step 2: Convert to fraction form
    12,793.86/19,187.55 = 5,769.90/x
  3. Step 3: Cross multiply
    12,793.86x = 19,187.55 × 5,769.90
  4. Step 4: Simplify right side
    12,793.86x = 110,710,244.75
  5. Step 5: Solve for x
    x = 110,710,244.75/12,793.86
  6. Step 6: Final answer
    x = 8,653.39

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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.