Home / 10,919.90-16,378.27-5,371.76

Finding the Fourth Proportional to 10,919.90, 16,378.27 and 5,371.76

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Solution

The fourth proportional to 10,919.90, 16,378.27 and 5,371.76 is: 8,056.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,919.90 : 16,378.27 = 5,371.76 : x
  2. Step 2: Convert to fraction form
    10,919.90/16,378.27 = 5,371.76/x
  3. Step 3: Cross multiply
    10,919.90x = 16,378.27 × 5,371.76
  4. Step 4: Simplify right side
    10,919.90x = 87,980,163.17
  5. Step 5: Solve for x
    x = 87,980,163.17/10,919.90
  6. Step 6: Final answer
    x = 8,056.86

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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.