Home / 10,769.40-16,143.30-4,930.20

Finding the Fourth Proportional to 10,769.40, 16,143.30 and 4,930.20

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Solution

The fourth proportional to 10,769.40, 16,143.30 and 4,930.20 is: 7,390.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,769.40 : 16,143.30 = 4,930.20 : x
  2. Step 2: Convert to fraction form
    10,769.40/16,143.30 = 4,930.20/x
  3. Step 3: Cross multiply
    10,769.40x = 16,143.30 × 4,930.20
  4. Step 4: Simplify right side
    10,769.40x = 79,589,697.66
  5. Step 5: Solve for x
    x = 79,589,697.66/10,769.40
  6. Step 6: Final answer
    x = 7,390.36

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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.