Home / 11,272.20-16,908.30-5,128.20

Finding the Fourth Proportional to 11,272.20, 16,908.30 and 5,128.20

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Solution

The fourth proportional to 11,272.20, 16,908.30 and 5,128.20 is: 7,692.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,272.20 : 16,908.30 = 5,128.20 : x
  2. Step 2: Convert to fraction form
    11,272.20/16,908.30 = 5,128.20/x
  3. Step 3: Cross multiply
    11,272.20x = 16,908.30 × 5,128.20
  4. Step 4: Simplify right side
    11,272.20x = 86,709,144.06
  5. Step 5: Solve for x
    x = 86,709,144.06/11,272.20
  6. Step 6: Final answer
    x = 7,692.30

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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.