Home / 13,129.40-19,694.10-6,556.60

Finding the Fourth Proportional to 13,129.40, 19,694.10 and 6,556.60

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Solution

The fourth proportional to 13,129.40, 19,694.10 and 6,556.60 is: 9,834.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,129.40 : 19,694.10 = 6,556.60 : x
  2. Step 2: Convert to fraction form
    13,129.40/19,694.10 = 6,556.60/x
  3. Step 3: Cross multiply
    13,129.40x = 19,694.10 × 6,556.60
  4. Step 4: Simplify right side
    13,129.40x = 129,126,336.06
  5. Step 5: Solve for x
    x = 129,126,336.06/13,129.40
  6. Step 6: Final answer
    x = 9,834.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.