Home / 11,815.67-16,305.49-6,711.15

Finding the Fourth Proportional to 11,815.67, 16,305.49 and 6,711.15

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Solution

The fourth proportional to 11,815.67, 16,305.49 and 6,711.15 is: 9,261.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,815.67 : 16,305.49 = 6,711.15 : x
  2. Step 2: Convert to fraction form
    11,815.67/16,305.49 = 6,711.15/x
  3. Step 3: Cross multiply
    11,815.67x = 16,305.49 × 6,711.15
  4. Step 4: Simplify right side
    11,815.67x = 109,428,605.99
  5. Step 5: Solve for x
    x = 109,428,605.99/11,815.67
  6. Step 6: Final answer
    x = 9,261.31

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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.