Home / 13,187.40-18,207.11-11,768.66

Finding the Fourth Proportional to 13,187.40, 18,207.11 and 11,768.66

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Solution

The fourth proportional to 13,187.40, 18,207.11 and 11,768.66 is: 16,248.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,187.40 : 18,207.11 = 11,768.66 : x
  2. Step 2: Convert to fraction form
    13,187.40/18,207.11 = 11,768.66/x
  3. Step 3: Cross multiply
    13,187.40x = 18,207.11 × 11,768.66
  4. Step 4: Simplify right side
    13,187.40x = 214,273,137.29
  5. Step 5: Solve for x
    x = 214,273,137.29/13,187.40
  6. Step 6: Final answer
    x = 16,248.32

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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.