Home / 20,611.03-28,443.57-11,179.59

Finding the Fourth Proportional to 20,611.03, 28,443.57 and 11,179.59

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Solution

The fourth proportional to 20,611.03, 28,443.57 and 11,179.59 is: 15,428.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,611.03 : 28,443.57 = 11,179.59 : x
  2. Step 2: Convert to fraction form
    20,611.03/28,443.57 = 11,179.59/x
  3. Step 3: Cross multiply
    20,611.03x = 28,443.57 × 11,179.59
  4. Step 4: Simplify right side
    20,611.03x = 317,987,450.74
  5. Step 5: Solve for x
    x = 317,987,450.74/20,611.03
  6. Step 6: Final answer
    x = 15,428.02

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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.