Home / 31,480.28-43,441.79-18,730.54

Finding the Fourth Proportional to 31,480.28, 43,441.79 and 18,730.54

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Solution

The fourth proportional to 31,480.28, 43,441.79 and 18,730.54 is: 25,847.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,480.28 : 43,441.79 = 18,730.54 : x
  2. Step 2: Convert to fraction form
    31,480.28/43,441.79 = 18,730.54/x
  3. Step 3: Cross multiply
    31,480.28x = 43,441.79 × 18,730.54
  4. Step 4: Simplify right side
    31,480.28x = 813,688,145.92
  5. Step 5: Solve for x
    x = 813,688,145.92/31,480.28
  6. Step 6: Final answer
    x = 25,847.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.