Home / 10,770.36-16,155.63-2,979.78

Finding the Fourth Proportional to 10,770.36, 16,155.63 and 2,979.78

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Solution

The fourth proportional to 10,770.36, 16,155.63 and 2,979.78 is: 4,469.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,770.36 : 16,155.63 = 2,979.78 : x
  2. Step 2: Convert to fraction form
    10,770.36/16,155.63 = 2,979.78/x
  3. Step 3: Cross multiply
    10,770.36x = 16,155.63 × 2,979.78
  4. Step 4: Simplify right side
    10,770.36x = 48,140,223.16
  5. Step 5: Solve for x
    x = 48,140,223.16/10,770.36
  6. Step 6: Final answer
    x = 4,469.69

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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.