Home / 20,611.24-28,445.24-11,660.34

Finding the Fourth Proportional to 20,611.24, 28,445.24 and 11,660.34

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Solution

The fourth proportional to 20,611.24, 28,445.24 and 11,660.34 is: 16,092.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,611.24 : 28,445.24 = 11,660.34 : x
  2. Step 2: Convert to fraction form
    20,611.24/28,445.24 = 11,660.34/x
  3. Step 3: Cross multiply
    20,611.24x = 28,445.24 × 11,660.34
  4. Step 4: Simplify right side
    20,611.24x = 331,681,169.78
  5. Step 5: Solve for x
    x = 331,681,169.78/20,611.24
  6. Step 6: Final answer
    x = 16,092.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.