Home / 10,769.20-16,148.40-4,919.20

Finding the Fourth Proportional to 10,769.20, 16,148.40 and 4,919.20

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Solution

The fourth proportional to 10,769.20, 16,148.40 and 4,919.20 is: 7,376.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,769.20 : 16,148.40 = 4,919.20 : x
  2. Step 2: Convert to fraction form
    10,769.20/16,148.40 = 4,919.20/x
  3. Step 3: Cross multiply
    10,769.20x = 16,148.40 × 4,919.20
  4. Step 4: Simplify right side
    10,769.20x = 79,437,209.28
  5. Step 5: Solve for x
    x = 79,437,209.28/10,769.20
  6. Step 6: Final answer
    x = 7,376.33

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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.