Home / 11,414.49-15,772.11-8,784.62

Finding the Fourth Proportional to 11,414.49, 15,772.11 and 8,784.62

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Solution

The fourth proportional to 11,414.49, 15,772.11 and 8,784.62 is: 12,138.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,414.49 : 15,772.11 = 8,784.62 : x
  2. Step 2: Convert to fraction form
    11,414.49/15,772.11 = 8,784.62/x
  3. Step 3: Cross multiply
    11,414.49x = 15,772.11 × 8,784.62
  4. Step 4: Simplify right side
    11,414.49x = 138,551,914.09
  5. Step 5: Solve for x
    x = 138,551,914.09/11,414.49
  6. Step 6: Final answer
    x = 12,138.25

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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.