Home / 12,223.20-16,865.84-7,188.44

Finding the Fourth Proportional to 12,223.20, 16,865.84 and 7,188.44

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Solution

The fourth proportional to 12,223.20, 16,865.84 and 7,188.44 is: 9,918.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,223.20 : 16,865.84 = 7,188.44 : x
  2. Step 2: Convert to fraction form
    12,223.20/16,865.84 = 7,188.44/x
  3. Step 3: Cross multiply
    12,223.20x = 16,865.84 × 7,188.44
  4. Step 4: Simplify right side
    12,223.20x = 121,239,078.89
  5. Step 5: Solve for x
    x = 121,239,078.89/12,223.20
  6. Step 6: Final answer
    x = 9,918.77

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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.