Home / 20,766.32-31,153.44-11,401.28

Finding the Fourth Proportional to 20,766.32, 31,153.44 and 11,401.28

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Solution

The fourth proportional to 20,766.32, 31,153.44 and 11,401.28 is: 17,104.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,766.32 : 31,153.44 = 11,401.28 : x
  2. Step 2: Convert to fraction form
    20,766.32/31,153.44 = 11,401.28/x
  3. Step 3: Cross multiply
    20,766.32x = 31,153.44 × 11,401.28
  4. Step 4: Simplify right side
    20,766.32x = 355,189,092.40
  5. Step 5: Solve for x
    x = 355,189,092.40/20,766.32
  6. Step 6: Final answer
    x = 17,104.09

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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.