Home / 10,919.70-16,381.26-4,679.64

Finding the Fourth Proportional to 10,919.70, 16,381.26 and 4,679.64

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Solution

The fourth proportional to 10,919.70, 16,381.26 and 4,679.64 is: 7,020.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,919.70 : 16,381.26 = 4,679.64 : x
  2. Step 2: Convert to fraction form
    10,919.70/16,381.26 = 4,679.64/x
  3. Step 3: Cross multiply
    10,919.70x = 16,381.26 × 4,679.64
  4. Step 4: Simplify right side
    10,919.70x = 76,658,399.55
  5. Step 5: Solve for x
    x = 76,658,399.55/10,919.70
  6. Step 6: Final answer
    x = 7,020.19

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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.