Home / 10,781.68-16,166.42-4,200.30

Finding the Fourth Proportional to 10,781.68, 16,166.42 and 4,200.30

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Solution

The fourth proportional to 10,781.68, 16,166.42 and 4,200.30 is: 6,298.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,781.68 : 16,166.42 = 4,200.30 : x
  2. Step 2: Convert to fraction form
    10,781.68/16,166.42 = 4,200.30/x
  3. Step 3: Cross multiply
    10,781.68x = 16,166.42 × 4,200.30
  4. Step 4: Simplify right side
    10,781.68x = 67,903,813.93
  5. Step 5: Solve for x
    x = 67,903,813.93/10,781.68
  6. Step 6: Final answer
    x = 6,298.07

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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.