Home / 20,147.49-30,209.01-7,668.36

Finding the Fourth Proportional to 20,147.49, 30,209.01 and 7,668.36

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Solution

The fourth proportional to 20,147.49, 30,209.01 and 7,668.36 is: 11,497.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,147.49 : 30,209.01 = 7,668.36 : x
  2. Step 2: Convert to fraction form
    20,147.49/30,209.01 = 7,668.36/x
  3. Step 3: Cross multiply
    20,147.49x = 30,209.01 × 7,668.36
  4. Step 4: Simplify right side
    20,147.49x = 231,653,563.92
  5. Step 5: Solve for x
    x = 231,653,563.92/20,147.49
  6. Step 6: Final answer
    x = 11,497.89

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1.5x scale

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.