Home / 20,611.16-28,442.64-11,179.52

Finding the Fourth Proportional to 20,611.16, 28,442.64 and 11,179.52

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Solution

The fourth proportional to 20,611.16, 28,442.64 and 11,179.52 is: 15,427.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,611.16 : 28,442.64 = 11,179.52 : x
  2. Step 2: Convert to fraction form
    20,611.16/28,442.64 = 11,179.52/x
  3. Step 3: Cross multiply
    20,611.16x = 28,442.64 × 11,179.52
  4. Step 4: Simplify right side
    20,611.16x = 317,975,062.73
  5. Step 5: Solve for x
    x = 317,975,062.73/20,611.16
  6. Step 6: Final answer
    x = 15,427.32

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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.