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Finding the Fourth Proportional to 13,653.16, 18,847.17 and 9,179.51

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Solution

The fourth proportional to 13,653.16, 18,847.17 and 9,179.51 is: 12,671.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,653.16 : 18,847.17 = 9,179.51 : x
  2. Step 2: Convert to fraction form
    13,653.16/18,847.17 = 9,179.51/x
  3. Step 3: Cross multiply
    13,653.16x = 18,847.17 × 9,179.51
  4. Step 4: Simplify right side
    13,653.16x = 173,007,691.25
  5. Step 5: Solve for x
    x = 173,007,691.25/13,653.16
  6. Step 6: Final answer
    x = 12,671.62

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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.