Home / 20,766.58-31,153.82-11,401.56

Finding the Fourth Proportional to 20,766.58, 31,153.82 and 11,401.56

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Solution

The fourth proportional to 20,766.58, 31,153.82 and 11,401.56 is: 17,104.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,766.58 : 31,153.82 = 11,401.56 : x
  2. Step 2: Convert to fraction form
    20,766.58/31,153.82 = 11,401.56/x
  3. Step 3: Cross multiply
    20,766.58x = 31,153.82 × 11,401.56
  4. Step 4: Simplify right side
    20,766.58x = 355,202,090.95
  5. Step 5: Solve for x
    x = 355,202,090.95/20,766.58
  6. Step 6: Final answer
    x = 17,104.51

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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.