Home / 13,279.96-18,326.82-7,311.88

Finding the Fourth Proportional to 13,279.96, 18,326.82 and 7,311.88

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Solution

The fourth proportional to 13,279.96, 18,326.82 and 7,311.88 is: 10,090.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,279.96 : 18,326.82 = 7,311.88 : x
  2. Step 2: Convert to fraction form
    13,279.96/18,326.82 = 7,311.88/x
  3. Step 3: Cross multiply
    13,279.96x = 18,326.82 × 7,311.88
  4. Step 4: Simplify right side
    13,279.96x = 134,003,508.62
  5. Step 5: Solve for x
    x = 134,003,508.62/13,279.96
  6. Step 6: Final answer
    x = 10,090.66

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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.