Home / 11,279.20-16,921.72-6,603.16

Finding the Fourth Proportional to 11,279.20, 16,921.72 and 6,603.16

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Solution

The fourth proportional to 11,279.20, 16,921.72 and 6,603.16 is: 9,906.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,279.20 : 16,921.72 = 6,603.16 : x
  2. Step 2: Convert to fraction form
    11,279.20/16,921.72 = 6,603.16/x
  3. Step 3: Cross multiply
    11,279.20x = 16,921.72 × 6,603.16
  4. Step 4: Simplify right side
    11,279.20x = 111,736,824.64
  5. Step 5: Solve for x
    x = 111,736,824.64/11,279.20
  6. Step 6: Final answer
    x = 9,906.45

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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.