Home / 10,769.15-16,147.65-4,187.80

Finding the Fourth Proportional to 10,769.15, 16,147.65 and 4,187.80

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Solution

The fourth proportional to 10,769.15, 16,147.65 and 4,187.80 is: 6,279.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,769.15 : 16,147.65 = 4,187.80 : x
  2. Step 2: Convert to fraction form
    10,769.15/16,147.65 = 4,187.80/x
  3. Step 3: Cross multiply
    10,769.15x = 16,147.65 × 4,187.80
  4. Step 4: Simplify right side
    10,769.15x = 67,623,164.56
  5. Step 5: Solve for x
    x = 67,623,164.56/10,769.15
  6. Step 6: Final answer
    x = 6,279.34

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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.