Home / 19,785.48-29,668.66-7,311.38

Finding the Fourth Proportional to 19,785.48, 29,668.66 and 7,311.38

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Solution

The fourth proportional to 19,785.48, 29,668.66 and 7,311.38 is: 10,963.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,785.48 : 29,668.66 = 7,311.38 : x
  2. Step 2: Convert to fraction form
    19,785.48/29,668.66 = 7,311.38/x
  3. Step 3: Cross multiply
    19,785.48x = 29,668.66 × 7,311.38
  4. Step 4: Simplify right side
    19,785.48x = 216,918,847.35
  5. Step 5: Solve for x
    x = 216,918,847.35/19,785.48
  6. Step 6: Final answer
    x = 10,963.54

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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.