Home / 10,787.40-16,181.10-4,213.80

Finding the Fourth Proportional to 10,787.40, 16,181.10 and 4,213.80

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Solution

The fourth proportional to 10,787.40, 16,181.10 and 4,213.80 is: 6,320.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,787.40 : 16,181.10 = 4,213.80 : x
  2. Step 2: Convert to fraction form
    10,787.40/16,181.10 = 4,213.80/x
  3. Step 3: Cross multiply
    10,787.40x = 16,181.10 × 4,213.80
  4. Step 4: Simplify right side
    10,787.40x = 68,183,919.18
  5. Step 5: Solve for x
    x = 68,183,919.18/10,787.40
  6. Step 6: Final answer
    x = 6,320.70

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1.5x scale

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.