Home / 20,108.82-30,163.21-13,777.46

Finding the Fourth Proportional to 20,108.82, 30,163.21 and 13,777.46

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Solution

The fourth proportional to 20,108.82, 30,163.21 and 13,777.46 is: 20,666.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,108.82 : 30,163.21 = 13,777.46 : x
  2. Step 2: Convert to fraction form
    20,108.82/30,163.21 = 13,777.46/x
  3. Step 3: Cross multiply
    20,108.82x = 30,163.21 × 13,777.46
  4. Step 4: Simplify right side
    20,108.82x = 415,572,419.25
  5. Step 5: Solve for x
    x = 415,572,419.25/20,108.82
  6. Step 6: Final answer
    x = 20,666.18

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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.