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Finding the Fourth Proportional to 15,904.62, 21,947.36 and 9,936

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Solution

The fourth proportional to 15,904.62, 21,947.36 and 9,936 is: 13,711.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,904.62 : 21,947.36 = 9,936 : x
  2. Step 2: Convert to fraction form
    15,904.62/21,947.36 = 9,936/x
  3. Step 3: Cross multiply
    15,904.62x = 21,947.36 × 9,936
  4. Step 4: Simplify right side
    15,904.62x = 218,068,919.28
  5. Step 5: Solve for x
    x = 218,068,919.28/15,904.62
  6. Step 6: Final answer
    x = 13,711.04

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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.