Home / 12,220.08-16,860.78-7,182.60

Finding the Fourth Proportional to 12,220.08, 16,860.78 and 7,182.60

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Solution

The fourth proportional to 12,220.08, 16,860.78 and 7,182.60 is: 9,910.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,220.08 : 16,860.78 = 7,182.60 : x
  2. Step 2: Convert to fraction form
    12,220.08/16,860.78 = 7,182.60/x
  3. Step 3: Cross multiply
    12,220.08x = 16,860.78 × 7,182.60
  4. Step 4: Simplify right side
    12,220.08x = 121,104,238.43
  5. Step 5: Solve for x
    x = 121,104,238.43/12,220.08
  6. Step 6: Final answer
    x = 9,910.27

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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.