Home / 11,271.38-16,905.09-3,480.26

Finding the Fourth Proportional to 11,271.38, 16,905.09 and 3,480.26

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Solution

The fourth proportional to 11,271.38, 16,905.09 and 3,480.26 is: 5,219.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,271.38 : 16,905.09 = 3,480.26 : x
  2. Step 2: Convert to fraction form
    11,271.38/16,905.09 = 3,480.26/x
  3. Step 3: Cross multiply
    11,271.38x = 16,905.09 × 3,480.26
  4. Step 4: Simplify right side
    11,271.38x = 58,834,108.52
  5. Step 5: Solve for x
    x = 58,834,108.52/11,271.38
  6. Step 6: Final answer
    x = 5,219.78

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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.