Home / 13,106.28-18,086.49-7,137.90

Finding the Fourth Proportional to 13,106.28, 18,086.49 and 7,137.90

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Solution

The fourth proportional to 13,106.28, 18,086.49 and 7,137.90 is: 9,850.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,106.28 : 18,086.49 = 7,137.90 : x
  2. Step 2: Convert to fraction form
    13,106.28/18,086.49 = 7,137.90/x
  3. Step 3: Cross multiply
    13,106.28x = 18,086.49 × 7,137.90
  4. Step 4: Simplify right side
    13,106.28x = 129,099,556.97
  5. Step 5: Solve for x
    x = 129,099,556.97/13,106.28
  6. Step 6: Final answer
    x = 9,850.21

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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.