Home / 11,728.83-16,185.65-6,423.60

Finding the Fourth Proportional to 11,728.83, 16,185.65 and 6,423.60

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Solution

The fourth proportional to 11,728.83, 16,185.65 and 6,423.60 is: 8,864.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,728.83 : 16,185.65 = 6,423.60 : x
  2. Step 2: Convert to fraction form
    11,728.83/16,185.65 = 6,423.60/x
  3. Step 3: Cross multiply
    11,728.83x = 16,185.65 × 6,423.60
  4. Step 4: Simplify right side
    11,728.83x = 103,970,109.22
  5. Step 5: Solve for x
    x = 103,970,109.22/11,728.83
  6. Step 6: Final answer
    x = 8,864.49

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Half scale
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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.