Home / 11,439.36-17,147.40-5,203.80

Finding the Fourth Proportional to 11,439.36, 17,147.40 and 5,203.80

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Solution

The fourth proportional to 11,439.36, 17,147.40 and 5,203.80 is: 7,800.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,439.36 : 17,147.40 = 5,203.80 : x
  2. Step 2: Convert to fraction form
    11,439.36/17,147.40 = 5,203.80/x
  3. Step 3: Cross multiply
    11,439.36x = 17,147.40 × 5,203.80
  4. Step 4: Simplify right side
    11,439.36x = 89,231,640.12
  5. Step 5: Solve for x
    x = 89,231,640.12/11,439.36
  6. Step 6: Final answer
    x = 7,800.40

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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.