Home / 12,209.66-18,315.92-3,886.76

Finding the Fourth Proportional to 12,209.66, 18,315.92 and 3,886.76

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Solution

The fourth proportional to 12,209.66, 18,315.92 and 3,886.76 is: 5,830.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,209.66 : 18,315.92 = 3,886.76 : x
  2. Step 2: Convert to fraction form
    12,209.66/18,315.92 = 3,886.76/x
  3. Step 3: Cross multiply
    12,209.66x = 18,315.92 × 3,886.76
  4. Step 4: Simplify right side
    12,209.66x = 71,189,585.22
  5. Step 5: Solve for x
    x = 71,189,585.22/12,209.66
  6. Step 6: Final answer
    x = 5,830.60

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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.