Home / 20,351.73-28,082.93-11,855.24

Finding the Fourth Proportional to 20,351.73, 28,082.93 and 11,855.24

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Solution

The fourth proportional to 20,351.73, 28,082.93 and 11,855.24 is: 16,358.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,351.73 : 28,082.93 = 11,855.24 : x
  2. Step 2: Convert to fraction form
    20,351.73/28,082.93 = 11,855.24/x
  3. Step 3: Cross multiply
    20,351.73x = 28,082.93 × 11,855.24
  4. Step 4: Simplify right side
    20,351.73x = 332,929,875.05
  5. Step 5: Solve for x
    x = 332,929,875.05/20,351.73
  6. Step 6: Final answer
    x = 16,358.80

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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.