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Finding the Fourth Proportional to 13,796, 20,698.08 and 7,956.80

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Solution

The fourth proportional to 13,796, 20,698.08 and 7,956.80 is: 11,937.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,796 : 20,698.08 = 7,956.80 : x
  2. Step 2: Convert to fraction form
    13,796/20,698.08 = 7,956.80/x
  3. Step 3: Cross multiply
    13,796x = 20,698.08 × 7,956.80
  4. Step 4: Simplify right side
    13,796x = 164,690,482.94
  5. Step 5: Solve for x
    x = 164,690,482.94/13,796
  6. Step 6: Final answer
    x = 11,937.55

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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.