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Finding the Fourth Proportional to 11,254.89, 16,892.93 and 5,712.21

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Solution

The fourth proportional to 11,254.89, 16,892.93 and 5,712.21 is: 8,573.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,254.89 : 16,892.93 = 5,712.21 : x
  2. Step 2: Convert to fraction form
    11,254.89/16,892.93 = 5,712.21/x
  3. Step 3: Cross multiply
    11,254.89x = 16,892.93 × 5,712.21
  4. Step 4: Simplify right side
    11,254.89x = 96,495,977.50
  5. Step 5: Solve for x
    x = 96,495,977.50/11,254.89
  6. Step 6: Final answer
    x = 8,573.69

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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.