Home / 11,330.94-16,989.72-3,431.05

Finding the Fourth Proportional to 11,330.94, 16,989.72 and 3,431.05

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Solution

The fourth proportional to 11,330.94, 16,989.72 and 3,431.05 is: 5,144.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,330.94 : 16,989.72 = 3,431.05 : x
  2. Step 2: Convert to fraction form
    11,330.94/16,989.72 = 3,431.05/x
  3. Step 3: Cross multiply
    11,330.94x = 16,989.72 × 3,431.05
  4. Step 4: Simplify right side
    11,330.94x = 58,292,578.81
  5. Step 5: Solve for x
    x = 58,292,578.81/11,330.94
  6. Step 6: Final answer
    x = 5,144.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.