Home / 20,690.17-28,552.44-11,258.73

Finding the Fourth Proportional to 20,690.17, 28,552.44 and 11,258.73

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Solution

The fourth proportional to 20,690.17, 28,552.44 and 11,258.73 is: 15,537.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,690.17 : 28,552.44 = 11,258.73 : x
  2. Step 2: Convert to fraction form
    20,690.17/28,552.44 = 11,258.73/x
  3. Step 3: Cross multiply
    20,690.17x = 28,552.44 × 11,258.73
  4. Step 4: Simplify right side
    20,690.17x = 321,464,212.80
  5. Step 5: Solve for x
    x = 321,464,212.80/20,690.17
  6. Step 6: Final answer
    x = 15,537.05

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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.