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Finding the Fourth Proportional to 19,917.52, 29,872.44 and 7,602.64

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Solution

The fourth proportional to 19,917.52, 29,872.44 and 7,602.64 is: 11,402.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,917.52 : 29,872.44 = 7,602.64 : x
  2. Step 2: Convert to fraction form
    19,917.52/29,872.44 = 7,602.64/x
  3. Step 3: Cross multiply
    19,917.52x = 29,872.44 × 7,602.64
  4. Step 4: Simplify right side
    19,917.52x = 227,109,407.24
  5. Step 5: Solve for x
    x = 227,109,407.24/19,917.52
  6. Step 6: Final answer
    x = 11,402.49

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.