Home / 13,099.62-18,076.77-7,131.04

Finding the Fourth Proportional to 13,099.62, 18,076.77 and 7,131.04

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Solution

The fourth proportional to 13,099.62, 18,076.77 and 7,131.04 is: 9,840.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,099.62 : 18,076.77 = 7,131.04 : x
  2. Step 2: Convert to fraction form
    13,099.62/18,076.77 = 7,131.04/x
  3. Step 3: Cross multiply
    13,099.62x = 18,076.77 × 7,131.04
  4. Step 4: Simplify right side
    13,099.62x = 128,906,124.75
  5. Step 5: Solve for x
    x = 128,906,124.75/13,099.62
  6. Step 6: Final answer
    x = 9,840.44

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.