Home / 21,576.11-29,769.85-12,144.68

Finding the Fourth Proportional to 21,576.11, 29,769.85 and 12,144.68

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Solution

The fourth proportional to 21,576.11, 29,769.85 and 12,144.68 is: 16,756.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,576.11 : 29,769.85 = 12,144.68 : x
  2. Step 2: Convert to fraction form
    21,576.11/29,769.85 = 12,144.68/x
  3. Step 3: Cross multiply
    21,576.11x = 29,769.85 × 12,144.68
  4. Step 4: Simplify right side
    21,576.11x = 361,545,122.69
  5. Step 5: Solve for x
    x = 361,545,122.69/21,576.11
  6. Step 6: Final answer
    x = 16,756.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.