Home / 20,107.61-30,161.42-13,776.24

Finding the Fourth Proportional to 20,107.61, 30,161.42 and 13,776.24

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Solution

The fourth proportional to 20,107.61, 30,161.42 and 13,776.24 is: 20,664.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,107.61 : 30,161.42 = 13,776.24 : x
  2. Step 2: Convert to fraction form
    20,107.61/30,161.42 = 13,776.24/x
  3. Step 3: Cross multiply
    20,107.61x = 30,161.42 × 13,776.24
  4. Step 4: Simplify right side
    20,107.61x = 415,510,891.78
  5. Step 5: Solve for x
    x = 415,510,891.78/20,107.61
  6. Step 6: Final answer
    x = 20,664.37

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Similar ratio
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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.