Home / 20,144.16-30,212.64-7,665.48

Finding the Fourth Proportional to 20,144.16, 30,212.64 and 7,665.48

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Solution

The fourth proportional to 20,144.16, 30,212.64 and 7,665.48 is: 11,496.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,144.16 : 30,212.64 = 7,665.48 : x
  2. Step 2: Convert to fraction form
    20,144.16/30,212.64 = 7,665.48/x
  3. Step 3: Cross multiply
    20,144.16x = 30,212.64 × 7,665.48
  4. Step 4: Simplify right side
    20,144.16x = 231,594,387.67
  5. Step 5: Solve for x
    x = 231,594,387.67/20,144.16
  6. Step 6: Final answer
    x = 11,496.85

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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.