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Finding the Fourth Proportional to 19,137.64, 28,689.16 and 6,822.76

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Solution

The fourth proportional to 19,137.64, 28,689.16 and 6,822.76 is: 10,227.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,137.64 : 28,689.16 = 6,822.76 : x
  2. Step 2: Convert to fraction form
    19,137.64/28,689.16 = 6,822.76/x
  3. Step 3: Cross multiply
    19,137.64x = 28,689.16 × 6,822.76
  4. Step 4: Simplify right side
    19,137.64x = 195,739,253.28
  5. Step 5: Solve for x
    x = 195,739,253.28/19,137.64
  6. Step 6: Final answer
    x = 10,227.97

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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.