Home / 12,425.87-18,638.71-3,660.66

Finding the Fourth Proportional to 12,425.87, 18,638.71 and 3,660.66

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Solution

The fourth proportional to 12,425.87, 18,638.71 and 3,660.66 is: 5,490.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,425.87 : 18,638.71 = 3,660.66 : x
  2. Step 2: Convert to fraction form
    12,425.87/18,638.71 = 3,660.66/x
  3. Step 3: Cross multiply
    12,425.87x = 18,638.71 × 3,660.66
  4. Step 4: Simplify right side
    12,425.87x = 68,229,971.00
  5. Step 5: Solve for x
    x = 68,229,971.00/12,425.87
  6. Step 6: Final answer
    x = 5,490.96

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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.