Home / 11,728.55-16,185.79-6,423.66

Finding the Fourth Proportional to 11,728.55, 16,185.79 and 6,423.66

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Solution

The fourth proportional to 11,728.55, 16,185.79 and 6,423.66 is: 8,864.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,728.55 : 16,185.79 = 6,423.66 : x
  2. Step 2: Convert to fraction form
    11,728.55/16,185.79 = 6,423.66/x
  3. Step 3: Cross multiply
    11,728.55x = 16,185.79 × 6,423.66
  4. Step 4: Simplify right side
    11,728.55x = 103,972,019.82
  5. Step 5: Solve for x
    x = 103,972,019.82/11,728.55
  6. Step 6: Final answer
    x = 8,864.86

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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.