Home / 19,991.32-29,948.82-11,199.64

Finding the Fourth Proportional to 19,991.32, 29,948.82 and 11,199.64

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Solution

The fourth proportional to 19,991.32, 29,948.82 and 11,199.64 is: 16,778.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,991.32 : 29,948.82 = 11,199.64 : x
  2. Step 2: Convert to fraction form
    19,991.32/29,948.82 = 11,199.64/x
  3. Step 3: Cross multiply
    19,991.32x = 29,948.82 × 11,199.64
  4. Step 4: Simplify right side
    19,991.32x = 335,416,002.42
  5. Step 5: Solve for x
    x = 335,416,002.42/19,991.32
  6. Step 6: Final answer
    x = 16,778.08

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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.