Home / 11,716.85-16,168.76-6,681.29

Finding the Fourth Proportional to 11,716.85, 16,168.76 and 6,681.29

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Solution

The fourth proportional to 11,716.85, 16,168.76 and 6,681.29 is: 9,219.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,716.85 : 16,168.76 = 6,681.29 : x
  2. Step 2: Convert to fraction form
    11,716.85/16,168.76 = 6,681.29/x
  3. Step 3: Cross multiply
    11,716.85x = 16,168.76 × 6,681.29
  4. Step 4: Simplify right side
    11,716.85x = 108,028,122.89
  5. Step 5: Solve for x
    x = 108,028,122.89/11,716.85
  6. Step 6: Final answer
    x = 9,219.89

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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.