Home / 15,518.62-21,414.76-8,712.14

Finding the Fourth Proportional to 15,518.62, 21,414.76 and 8,712.14

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Solution

The fourth proportional to 15,518.62, 21,414.76 and 8,712.14 is: 12,022.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,518.62 : 21,414.76 = 8,712.14 : x
  2. Step 2: Convert to fraction form
    15,518.62/21,414.76 = 8,712.14/x
  3. Step 3: Cross multiply
    15,518.62x = 21,414.76 × 8,712.14
  4. Step 4: Simplify right side
    15,518.62x = 186,568,258.33
  5. Step 5: Solve for x
    x = 186,568,258.33/15,518.62
  6. Step 6: Final answer
    x = 12,022.22

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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.