Home / 21,204.57-31,815.66-10,668.97

Finding the Fourth Proportional to 21,204.57, 31,815.66 and 10,668.97

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Solution

The fourth proportional to 21,204.57, 31,815.66 and 10,668.97 is: 16,007.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,204.57 : 31,815.66 = 10,668.97 : x
  2. Step 2: Convert to fraction form
    21,204.57/31,815.66 = 10,668.97/x
  3. Step 3: Cross multiply
    21,204.57x = 31,815.66 × 10,668.97
  4. Step 4: Simplify right side
    21,204.57x = 339,440,162.99
  5. Step 5: Solve for x
    x = 339,440,162.99/21,204.57
  6. Step 6: Final answer
    x = 16,007.88

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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.