Home / 10,129.14-13,964.40-6,979.86

Finding the Fourth Proportional to 10,129.14, 13,964.40 and 6,979.86

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Solution

The fourth proportional to 10,129.14, 13,964.40 and 6,979.86 is: 9,622.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,129.14 : 13,964.40 = 6,979.86 : x
  2. Step 2: Convert to fraction form
    10,129.14/13,964.40 = 6,979.86/x
  3. Step 3: Cross multiply
    10,129.14x = 13,964.40 × 6,979.86
  4. Step 4: Simplify right side
    10,129.14x = 97,469,556.98
  5. Step 5: Solve for x
    x = 97,469,556.98/10,129.14
  6. Step 6: Final answer
    x = 9,622.69

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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.