Home / 10,787.80-16,181.70-8,584.60

Finding the Fourth Proportional to 10,787.80, 16,181.70 and 8,584.60

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Solution

The fourth proportional to 10,787.80, 16,181.70 and 8,584.60 is: 12,876.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,787.80 : 16,181.70 = 8,584.60 : x
  2. Step 2: Convert to fraction form
    10,787.80/16,181.70 = 8,584.60/x
  3. Step 3: Cross multiply
    10,787.80x = 16,181.70 × 8,584.60
  4. Step 4: Simplify right side
    10,787.80x = 138,913,421.82
  5. Step 5: Solve for x
    x = 138,913,421.82/10,787.80
  6. Step 6: Final answer
    x = 12,876.90

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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.