Home / 13,187.09-18,201.15-8,156.18

Finding the Fourth Proportional to 13,187.09, 18,201.15 and 8,156.18

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Solution

The fourth proportional to 13,187.09, 18,201.15 and 8,156.18 is: 11,257.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,187.09 : 18,201.15 = 8,156.18 : x
  2. Step 2: Convert to fraction form
    13,187.09/18,201.15 = 8,156.18/x
  3. Step 3: Cross multiply
    13,187.09x = 18,201.15 × 8,156.18
  4. Step 4: Simplify right side
    13,187.09x = 148,451,764.60
  5. Step 5: Solve for x
    x = 148,451,764.60/13,187.09
  6. Step 6: Final answer
    x = 11,257.36

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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.