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Finding the Fourth Proportional to 20,452.82, 30,660.77 and 14,215.77

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Solution

The fourth proportional to 20,452.82, 30,660.77 and 14,215.77 is: 21,310.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,452.82 : 30,660.77 = 14,215.77 : x
  2. Step 2: Convert to fraction form
    20,452.82/30,660.77 = 14,215.77/x
  3. Step 3: Cross multiply
    20,452.82x = 30,660.77 × 14,215.77
  4. Step 4: Simplify right side
    20,452.82x = 435,866,409.92
  5. Step 5: Solve for x
    x = 435,866,409.92/20,452.82
  6. Step 6: Final answer
    x = 21,310.82

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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.