Home / 20,110.32-30,165.46-13,778.96

Finding the Fourth Proportional to 20,110.32, 30,165.46 and 13,778.96

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Solution

The fourth proportional to 20,110.32, 30,165.46 and 13,778.96 is: 20,668.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,110.32 : 30,165.46 = 13,778.96 : x
  2. Step 2: Convert to fraction form
    20,110.32/30,165.46 = 13,778.96/x
  3. Step 3: Cross multiply
    20,110.32x = 30,165.46 × 13,778.96
  4. Step 4: Simplify right side
    20,110.32x = 415,648,666.72
  5. Step 5: Solve for x
    x = 415,648,666.72/20,110.32
  6. Step 6: Final answer
    x = 20,668.43

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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.