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Finding the Fourth Proportional to 18,282.62, 27,407.72 and 8,917.40

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Solution

The fourth proportional to 18,282.62, 27,407.72 and 8,917.40 is: 13,368.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,282.62 : 27,407.72 = 8,917.40 : x
  2. Step 2: Convert to fraction form
    18,282.62/27,407.72 = 8,917.40/x
  3. Step 3: Cross multiply
    18,282.62x = 27,407.72 × 8,917.40
  4. Step 4: Simplify right side
    18,282.62x = 244,405,602.33
  5. Step 5: Solve for x
    x = 244,405,602.33/18,282.62
  6. Step 6: Final answer
    x = 13,368.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.