Home / 31,945.95-47,917.31-12,222.99

Finding the Fourth Proportional to 31,945.95, 47,917.31 and 12,222.99

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Solution

The fourth proportional to 31,945.95, 47,917.31 and 12,222.99 is: 18,333.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,945.95 : 47,917.31 = 12,222.99 : x
  2. Step 2: Convert to fraction form
    31,945.95/47,917.31 = 12,222.99/x
  3. Step 3: Cross multiply
    31,945.95x = 47,917.31 × 12,222.99
  4. Step 4: Simplify right side
    31,945.95x = 585,692,739.84
  5. Step 5: Solve for x
    x = 585,692,739.84/31,945.95
  6. Step 6: Final answer
    x = 18,333.87

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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.