Home / 20,131.16-30,200.85-7,648.83

Finding the Fourth Proportional to 20,131.16, 30,200.85 and 7,648.83

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Solution

The fourth proportional to 20,131.16, 30,200.85 and 7,648.83 is: 11,474.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,131.16 : 30,200.85 = 7,648.83 : x
  2. Step 2: Convert to fraction form
    20,131.16/30,200.85 = 7,648.83/x
  3. Step 3: Cross multiply
    20,131.16x = 30,200.85 × 7,648.83
  4. Step 4: Simplify right side
    20,131.16x = 231,001,167.51
  5. Step 5: Solve for x
    x = 231,001,167.51/20,131.16
  6. Step 6: Final answer
    x = 11,474.81

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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.