Home / 10,678.13-16,015.77-3,181.55

Finding the Fourth Proportional to 10,678.13, 16,015.77 and 3,181.55

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Solution

The fourth proportional to 10,678.13, 16,015.77 and 3,181.55 is: 4,771.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,678.13 : 16,015.77 = 3,181.55 : x
  2. Step 2: Convert to fraction form
    10,678.13/16,015.77 = 3,181.55/x
  3. Step 3: Cross multiply
    10,678.13x = 16,015.77 × 3,181.55
  4. Step 4: Simplify right side
    10,678.13x = 50,954,892.96
  5. Step 5: Solve for x
    x = 50,954,892.96/10,678.13
  6. Step 6: Final answer
    x = 4,771.90

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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.