Home / 31,903.97-47,856.39-12,183.60

Finding the Fourth Proportional to 31,903.97, 47,856.39 and 12,183.60

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Solution

The fourth proportional to 31,903.97, 47,856.39 and 12,183.60 is: 18,275.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,903.97 : 47,856.39 = 12,183.60 : x
  2. Step 2: Convert to fraction form
    31,903.97/47,856.39 = 12,183.60/x
  3. Step 3: Cross multiply
    31,903.97x = 47,856.39 × 12,183.60
  4. Step 4: Simplify right side
    31,903.97x = 583,063,113.20
  5. Step 5: Solve for x
    x = 583,063,113.20/31,903.97
  6. Step 6: Final answer
    x = 18,275.57

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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.