Home / 20,576.50-28,396.79-11,623.78

Finding the Fourth Proportional to 20,576.50, 28,396.79 and 11,623.78

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Solution

The fourth proportional to 20,576.50, 28,396.79 and 11,623.78 is: 16,041.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,576.50 : 28,396.79 = 11,623.78 : x
  2. Step 2: Convert to fraction form
    20,576.50/28,396.79 = 11,623.78/x
  3. Step 3: Cross multiply
    20,576.50x = 28,396.79 × 11,623.78
  4. Step 4: Simplify right side
    20,576.50x = 330,078,039.67
  5. Step 5: Solve for x
    x = 330,078,039.67/20,576.50
  6. Step 6: Final answer
    x = 16,041.51

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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.