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Finding the Fourth Proportional to 16,787.80, 25,201.10 and 9,011.80

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Solution

The fourth proportional to 16,787.80, 25,201.10 and 9,011.80 is: 13,528.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,787.80 : 25,201.10 = 9,011.80 : x
  2. Step 2: Convert to fraction form
    16,787.80/25,201.10 = 9,011.80/x
  3. Step 3: Cross multiply
    16,787.80x = 25,201.10 × 9,011.80
  4. Step 4: Simplify right side
    16,787.80x = 227,107,272.98
  5. Step 5: Solve for x
    x = 227,107,272.98/16,787.80
  6. Step 6: Final answer
    x = 13,528.11

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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.