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Finding the Fourth Proportional to 19,957.59, 29,919.96 and 7,950.96

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Solution

The fourth proportional to 19,957.59, 29,919.96 and 7,950.96 is: 11,919.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,957.59 : 29,919.96 = 7,950.96 : x
  2. Step 2: Convert to fraction form
    19,957.59/29,919.96 = 7,950.96/x
  3. Step 3: Cross multiply
    19,957.59x = 29,919.96 × 7,950.96
  4. Step 4: Simplify right side
    19,957.59x = 237,892,405.16
  5. Step 5: Solve for x
    x = 237,892,405.16/19,957.59
  6. Step 6: Final answer
    x = 11,919.90

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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.