Home / 12,209.08-18,315.44-3,886.64

Finding the Fourth Proportional to 12,209.08, 18,315.44 and 3,886.64

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Solution

The fourth proportional to 12,209.08, 18,315.44 and 3,886.64 is: 5,830.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,209.08 : 18,315.44 = 3,886.64 : x
  2. Step 2: Convert to fraction form
    12,209.08/18,315.44 = 3,886.64/x
  3. Step 3: Cross multiply
    12,209.08x = 18,315.44 × 3,886.64
  4. Step 4: Simplify right side
    12,209.08x = 71,185,439.86
  5. Step 5: Solve for x
    x = 71,185,439.86/12,209.08
  6. Step 6: Final answer
    x = 5,830.53

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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.