Home / 12,439.47-18,659.39-4,440.59

Finding the Fourth Proportional to 12,439.47, 18,659.39 and 4,440.59

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Solution

The fourth proportional to 12,439.47, 18,659.39 and 4,440.59 is: 6,660.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,439.47 : 18,659.39 = 4,440.59 : x
  2. Step 2: Convert to fraction form
    12,439.47/18,659.39 = 4,440.59/x
  3. Step 3: Cross multiply
    12,439.47x = 18,659.39 × 4,440.59
  4. Step 4: Simplify right side
    12,439.47x = 82,858,585.14
  5. Step 5: Solve for x
    x = 82,858,585.14/12,439.47
  6. Step 6: Final answer
    x = 6,660.94

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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.