Home / 11,728.68-16,185.50-6,623.80

Finding the Fourth Proportional to 11,728.68, 16,185.50 and 6,623.80

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Solution

The fourth proportional to 11,728.68, 16,185.50 and 6,623.80 is: 9,140.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,728.68 : 16,185.50 = 6,623.80 : x
  2. Step 2: Convert to fraction form
    11,728.68/16,185.50 = 6,623.80/x
  3. Step 3: Cross multiply
    11,728.68x = 16,185.50 × 6,623.80
  4. Step 4: Simplify right side
    11,728.68x = 107,209,514.90
  5. Step 5: Solve for x
    x = 107,209,514.90/11,728.68
  6. Step 6: Final answer
    x = 9,140.80

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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.