Home / 12,283.92-18,429.21-3,519.72

Finding the Fourth Proportional to 12,283.92, 18,429.21 and 3,519.72

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Solution

The fourth proportional to 12,283.92, 18,429.21 and 3,519.72 is: 5,280.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,283.92 : 18,429.21 = 3,519.72 : x
  2. Step 2: Convert to fraction form
    12,283.92/18,429.21 = 3,519.72/x
  3. Step 3: Cross multiply
    12,283.92x = 18,429.21 × 3,519.72
  4. Step 4: Simplify right side
    12,283.92x = 64,865,659.02
  5. Step 5: Solve for x
    x = 64,865,659.02/12,283.92
  6. Step 6: Final answer
    x = 5,280.53

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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.