Home / 23,106.30-31,991.67-21,939.90

Finding the Fourth Proportional to 23,106.30, 31,991.67 and 21,939.90

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Solution

The fourth proportional to 23,106.30, 31,991.67 and 21,939.90 is: 30,376.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,106.30 : 31,991.67 = 21,939.90 : x
  2. Step 2: Convert to fraction form
    23,106.30/31,991.67 = 21,939.90/x
  3. Step 3: Cross multiply
    23,106.30x = 31,991.67 × 21,939.90
  4. Step 4: Simplify right side
    23,106.30x = 701,894,040.63
  5. Step 5: Solve for x
    x = 701,894,040.63/23,106.30
  6. Step 6: Final answer
    x = 30,376.74

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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.