Home / 20,775.96-31,175.28-12,027.96

Finding the Fourth Proportional to 20,775.96, 31,175.28 and 12,027.96

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Solution

The fourth proportional to 20,775.96, 31,175.28 and 12,027.96 is: 18,048.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,775.96 : 31,175.28 = 12,027.96 : x
  2. Step 2: Convert to fraction form
    20,775.96/31,175.28 = 12,027.96/x
  3. Step 3: Cross multiply
    20,775.96x = 31,175.28 × 12,027.96
  4. Step 4: Simplify right side
    20,775.96x = 374,975,020.83
  5. Step 5: Solve for x
    x = 374,975,020.83/20,775.96
  6. Step 6: Final answer
    x = 18,048.51

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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.