Home / 31,420.09-47,091.84-14,757.90

Finding the Fourth Proportional to 31,420.09, 47,091.84 and 14,757.90

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Solution

The fourth proportional to 31,420.09, 47,091.84 and 14,757.90 is: 22,118.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,420.09 : 47,091.84 = 14,757.90 : x
  2. Step 2: Convert to fraction form
    31,420.09/47,091.84 = 14,757.90/x
  3. Step 3: Cross multiply
    31,420.09x = 47,091.84 × 14,757.90
  4. Step 4: Simplify right side
    31,420.09x = 694,976,665.54
  5. Step 5: Solve for x
    x = 694,976,665.54/31,420.09
  6. Step 6: Final answer
    x = 22,118.86

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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.