Home / 11,728.89-16,185.74-6,423.39

Finding the Fourth Proportional to 11,728.89, 16,185.74 and 6,423.39

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Solution

The fourth proportional to 11,728.89, 16,185.74 and 6,423.39 is: 8,864.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,728.89 : 16,185.74 = 6,423.39 : x
  2. Step 2: Convert to fraction form
    11,728.89/16,185.74 = 6,423.39/x
  3. Step 3: Cross multiply
    11,728.89x = 16,185.74 × 6,423.39
  4. Step 4: Simplify right side
    11,728.89x = 103,967,320.46
  5. Step 5: Solve for x
    x = 103,967,320.46/11,728.89
  6. Step 6: Final answer
    x = 8,864.21

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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.