Home / 10,979.88-16,469.80-3,188.69

Finding the Fourth Proportional to 10,979.88, 16,469.80 and 3,188.69

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Solution

The fourth proportional to 10,979.88, 16,469.80 and 3,188.69 is: 4,783.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,979.88 : 16,469.80 = 3,188.69 : x
  2. Step 2: Convert to fraction form
    10,979.88/16,469.80 = 3,188.69/x
  3. Step 3: Cross multiply
    10,979.88x = 16,469.80 × 3,188.69
  4. Step 4: Simplify right side
    10,979.88x = 52,517,058.00
  5. Step 5: Solve for x
    x = 52,517,058.00/10,979.88
  6. Step 6: Final answer
    x = 4,783.03

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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.