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Finding the Fourth Proportional to 15,006.10, 20,714.25 and 13,431.46

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Solution

The fourth proportional to 15,006.10, 20,714.25 and 13,431.46 is: 18,540.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,006.10 : 20,714.25 = 13,431.46 : x
  2. Step 2: Convert to fraction form
    15,006.10/20,714.25 = 13,431.46/x
  3. Step 3: Cross multiply
    15,006.10x = 20,714.25 × 13,431.46
  4. Step 4: Simplify right side
    15,006.10x = 278,222,620.31
  5. Step 5: Solve for x
    x = 278,222,620.31/15,006.10
  6. Step 6: Final answer
    x = 18,540.63

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.