Home / 12,209.25-16,848.77-6,620.25

Finding the Fourth Proportional to 12,209.25, 16,848.77 and 6,620.25

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Solution

The fourth proportional to 12,209.25, 16,848.77 and 6,620.25 is: 9,135.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,209.25 : 16,848.77 = 6,620.25 : x
  2. Step 2: Convert to fraction form
    12,209.25/16,848.77 = 6,620.25/x
  3. Step 3: Cross multiply
    12,209.25x = 16,848.77 × 6,620.25
  4. Step 4: Simplify right side
    12,209.25x = 111,543,086.14
  5. Step 5: Solve for x
    x = 111,543,086.14/12,209.25
  6. Step 6: Final answer
    x = 9,135.95

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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.