Home / 31,268.39-43,154.55-18,520.54

Finding the Fourth Proportional to 31,268.39, 43,154.55 and 18,520.54

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Solution

The fourth proportional to 31,268.39, 43,154.55 and 18,520.54 is: 25,560.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,268.39 : 43,154.55 = 18,520.54 : x
  2. Step 2: Convert to fraction form
    31,268.39/43,154.55 = 18,520.54/x
  3. Step 3: Cross multiply
    31,268.39x = 43,154.55 × 18,520.54
  4. Step 4: Simplify right side
    31,268.39x = 799,245,569.46
  5. Step 5: Solve for x
    x = 799,245,569.46/31,268.39
  6. Step 6: Final answer
    x = 25,560.82

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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.