Home / 31,684.89-47,540.55-13,906.35

Finding the Fourth Proportional to 31,684.89, 47,540.55 and 13,906.35

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Solution

The fourth proportional to 31,684.89, 47,540.55 and 13,906.35 is: 20,865.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,684.89 : 47,540.55 = 13,906.35 : x
  2. Step 2: Convert to fraction form
    31,684.89/47,540.55 = 13,906.35/x
  3. Step 3: Cross multiply
    31,684.89x = 47,540.55 × 13,906.35
  4. Step 4: Simplify right side
    31,684.89x = 661,115,527.49
  5. Step 5: Solve for x
    x = 661,115,527.49/31,684.89
  6. Step 6: Final answer
    x = 20,865.33

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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.