Home / 12,489.73-18,735.85-4,055.88

Finding the Fourth Proportional to 12,489.73, 18,735.85 and 4,055.88

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Solution

The fourth proportional to 12,489.73, 18,735.85 and 4,055.88 is: 6,084.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,489.73 : 18,735.85 = 4,055.88 : x
  2. Step 2: Convert to fraction form
    12,489.73/18,735.85 = 4,055.88/x
  3. Step 3: Cross multiply
    12,489.73x = 18,735.85 × 4,055.88
  4. Step 4: Simplify right side
    12,489.73x = 75,990,364.37
  5. Step 5: Solve for x
    x = 75,990,364.37/12,489.73
  6. Step 6: Final answer
    x = 6,084.23

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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.