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Finding the Fourth Proportional to 19,992.66, 29,942.28 and 15,804.54

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Solution

The fourth proportional to 19,992.66, 29,942.28 and 15,804.54 is: 23,669.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,992.66 : 29,942.28 = 15,804.54 : x
  2. Step 2: Convert to fraction form
    19,992.66/29,942.28 = 15,804.54/x
  3. Step 3: Cross multiply
    19,992.66x = 29,942.28 × 15,804.54
  4. Step 4: Simplify right side
    19,992.66x = 473,223,961.95
  5. Step 5: Solve for x
    x = 473,223,961.95/19,992.66
  6. Step 6: Final answer
    x = 23,669.88

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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.