Home / 13,119.65-19,668.52-6,536.78

Finding the Fourth Proportional to 13,119.65, 19,668.52 and 6,536.78

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Solution

The fourth proportional to 13,119.65, 19,668.52 and 6,536.78 is: 9,799.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,119.65 : 19,668.52 = 6,536.78 : x
  2. Step 2: Convert to fraction form
    13,119.65/19,668.52 = 6,536.78/x
  3. Step 3: Cross multiply
    13,119.65x = 19,668.52 × 6,536.78
  4. Step 4: Simplify right side
    13,119.65x = 128,568,788.17
  5. Step 5: Solve for x
    x = 128,568,788.17/13,119.65
  6. Step 6: Final answer
    x = 9,799.71

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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.