Home / 11,911.50-16,438.61-6,876.64

Finding the Fourth Proportional to 11,911.50, 16,438.61 and 6,876.64

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Solution

The fourth proportional to 11,911.50, 16,438.61 and 6,876.64 is: 9,490.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,911.50 : 16,438.61 = 6,876.64 : x
  2. Step 2: Convert to fraction form
    11,911.50/16,438.61 = 6,876.64/x
  3. Step 3: Cross multiply
    11,911.50x = 16,438.61 × 6,876.64
  4. Step 4: Simplify right side
    11,911.50x = 113,042,403.07
  5. Step 5: Solve for x
    x = 113,042,403.07/11,911.50
  6. Step 6: Final answer
    x = 9,490.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.