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Finding the Fourth Proportional to 26,441.69, 39,668 and 8,912.88

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Solution

The fourth proportional to 26,441.69, 39,668 and 8,912.88 is: 13,371.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,441.69 : 39,668 = 8,912.88 : x
  2. Step 2: Convert to fraction form
    26,441.69/39,668 = 8,912.88/x
  3. Step 3: Cross multiply
    26,441.69x = 39,668 × 8,912.88
  4. Step 4: Simplify right side
    26,441.69x = 353,556,123.84
  5. Step 5: Solve for x
    x = 353,556,123.84/26,441.69
  6. Step 6: Final answer
    x = 13,371.16

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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.