Home / 20,475.09-28,252.62-11,977.92

Finding the Fourth Proportional to 20,475.09, 28,252.62 and 11,977.92

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Solution

The fourth proportional to 20,475.09, 28,252.62 and 11,977.92 is: 16,527.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,475.09 : 28,252.62 = 11,977.92 : x
  2. Step 2: Convert to fraction form
    20,475.09/28,252.62 = 11,977.92/x
  3. Step 3: Cross multiply
    20,475.09x = 28,252.62 × 11,977.92
  4. Step 4: Simplify right side
    20,475.09x = 338,407,622.15
  5. Step 5: Solve for x
    x = 338,407,622.15/20,475.09
  6. Step 6: Final answer
    x = 16,527.77

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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.