Home / 11,276.40-16,919.40-7,119.60

Finding the Fourth Proportional to 11,276.40, 16,919.40 and 7,119.60

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Solution

The fourth proportional to 11,276.40, 16,919.40 and 7,119.60 is: 10,682.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,276.40 : 16,919.40 = 7,119.60 : x
  2. Step 2: Convert to fraction form
    11,276.40/16,919.40 = 7,119.60/x
  3. Step 3: Cross multiply
    11,276.40x = 16,919.40 × 7,119.60
  4. Step 4: Simplify right side
    11,276.40x = 120,459,360.24
  5. Step 5: Solve for x
    x = 120,459,360.24/11,276.40
  6. Step 6: Final answer
    x = 10,682.43

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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.