Home / 13,131.24-18,107.34-8,649.26

Finding the Fourth Proportional to 13,131.24, 18,107.34 and 8,649.26

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Solution

The fourth proportional to 13,131.24, 18,107.34 and 8,649.26 is: 11,926.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,131.24 : 18,107.34 = 8,649.26 : x
  2. Step 2: Convert to fraction form
    13,131.24/18,107.34 = 8,649.26/x
  3. Step 3: Cross multiply
    13,131.24x = 18,107.34 × 8,649.26
  4. Step 4: Simplify right side
    13,131.24x = 156,615,091.57
  5. Step 5: Solve for x
    x = 156,615,091.57/13,131.24
  6. Step 6: Final answer
    x = 11,926.91

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Double scale
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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.