Home / 31,363.60-43,284.04-20,734.80

Finding the Fourth Proportional to 31,363.60, 43,284.04 and 20,734.80

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Solution

The fourth proportional to 31,363.60, 43,284.04 and 20,734.80 is: 28,615.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,363.60 : 43,284.04 = 20,734.80 : x
  2. Step 2: Convert to fraction form
    31,363.60/43,284.04 = 20,734.80/x
  3. Step 3: Cross multiply
    31,363.60x = 43,284.04 × 20,734.80
  4. Step 4: Simplify right side
    31,363.60x = 897,485,912.59
  5. Step 5: Solve for x
    x = 897,485,912.59/31,363.60
  6. Step 6: Final answer
    x = 28,615.53

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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.