Home / 11,439.72-17,159.36-3,119.60

Finding the Fourth Proportional to 11,439.72, 17,159.36 and 3,119.60

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Solution

The fourth proportional to 11,439.72, 17,159.36 and 3,119.60 is: 4,679.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,439.72 : 17,159.36 = 3,119.60 : x
  2. Step 2: Convert to fraction form
    11,439.72/17,159.36 = 3,119.60/x
  3. Step 3: Cross multiply
    11,439.72x = 17,159.36 × 3,119.60
  4. Step 4: Simplify right side
    11,439.72x = 53,530,339.46
  5. Step 5: Solve for x
    x = 53,530,339.46/11,439.72
  6. Step 6: Final answer
    x = 4,679.34

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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.