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Finding the Fourth Proportional to 36,606.40, 54,915.29 and 12,917.09

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Solution

The fourth proportional to 36,606.40, 54,915.29 and 12,917.09 is: 19,377.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,606.40 : 54,915.29 = 12,917.09 : x
  2. Step 2: Convert to fraction form
    36,606.40/54,915.29 = 12,917.09/x
  3. Step 3: Cross multiply
    36,606.40x = 54,915.29 × 12,917.09
  4. Step 4: Simplify right side
    36,606.40x = 709,345,743.31
  5. Step 5: Solve for x
    x = 709,345,743.31/36,606.40
  6. Step 6: Final answer
    x = 19,377.64

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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.