Home / 31,942.35-47,922.78-13,218.93

Finding the Fourth Proportional to 31,942.35, 47,922.78 and 13,218.93

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Solution

The fourth proportional to 31,942.35, 47,922.78 and 13,218.93 is: 19,832.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,942.35 : 47,922.78 = 13,218.93 : x
  2. Step 2: Convert to fraction form
    31,942.35/47,922.78 = 13,218.93/x
  3. Step 3: Cross multiply
    31,942.35x = 47,922.78 × 13,218.93
  4. Step 4: Simplify right side
    31,942.35x = 633,487,874.23
  5. Step 5: Solve for x
    x = 633,487,874.23/31,942.35
  6. Step 6: Final answer
    x = 19,832.23

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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.