Home / 11,316.81-16,969.05-3,920.66

Finding the Fourth Proportional to 11,316.81, 16,969.05 and 3,920.66

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Solution

The fourth proportional to 11,316.81, 16,969.05 and 3,920.66 is: 5,878.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,316.81 : 16,969.05 = 3,920.66 : x
  2. Step 2: Convert to fraction form
    11,316.81/16,969.05 = 3,920.66/x
  3. Step 3: Cross multiply
    11,316.81x = 16,969.05 × 3,920.66
  4. Step 4: Simplify right side
    11,316.81x = 66,529,790.73
  5. Step 5: Solve for x
    x = 66,529,790.73/11,316.81
  6. Step 6: Final answer
    x = 5,878.85

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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.