Home / 11,331.20-16,996.80-5,187.20

Finding the Fourth Proportional to 11,331.20, 16,996.80 and 5,187.20

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Solution

The fourth proportional to 11,331.20, 16,996.80 and 5,187.20 is: 7,780.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,331.20 : 16,996.80 = 5,187.20 : x
  2. Step 2: Convert to fraction form
    11,331.20/16,996.80 = 5,187.20/x
  3. Step 3: Cross multiply
    11,331.20x = 16,996.80 × 5,187.20
  4. Step 4: Simplify right side
    11,331.20x = 88,165,800.96
  5. Step 5: Solve for x
    x = 88,165,800.96/11,331.20
  6. Step 6: Final answer
    x = 7,780.80

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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.