Home / 20,611.53-28,444.26-11,180.09

Finding the Fourth Proportional to 20,611.53, 28,444.26 and 11,180.09

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Solution

The fourth proportional to 20,611.53, 28,444.26 and 11,180.09 is: 15,428.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,611.53 : 28,444.26 = 11,180.09 : x
  2. Step 2: Convert to fraction form
    20,611.53/28,444.26 = 11,180.09/x
  3. Step 3: Cross multiply
    20,611.53x = 28,444.26 × 11,180.09
  4. Step 4: Simplify right side
    20,611.53x = 318,009,244.56
  5. Step 5: Solve for x
    x = 318,009,244.56/20,611.53
  6. Step 6: Final answer
    x = 15,428.71

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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.