Home / 31,906.20-47,846.34-13,895.40

Finding the Fourth Proportional to 31,906.20, 47,846.34 and 13,895.40

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Solution

The fourth proportional to 31,906.20, 47,846.34 and 13,895.40 is: 20,837.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,906.20 : 47,846.34 = 13,895.40 : x
  2. Step 2: Convert to fraction form
    31,906.20/47,846.34 = 13,895.40/x
  3. Step 3: Cross multiply
    31,906.20x = 47,846.34 × 13,895.40
  4. Step 4: Simplify right side
    31,906.20x = 664,844,032.84
  5. Step 5: Solve for x
    x = 664,844,032.84/31,906.20
  6. Step 6: Final answer
    x = 20,837.46

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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.