Home / 31,781.20-47,669.47-13,056.15

Finding the Fourth Proportional to 31,781.20, 47,669.47 and 13,056.15

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Solution

The fourth proportional to 31,781.20, 47,669.47 and 13,056.15 is: 19,583.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,781.20 : 47,669.47 = 13,056.15 : x
  2. Step 2: Convert to fraction form
    31,781.20/47,669.47 = 13,056.15/x
  3. Step 3: Cross multiply
    31,781.20x = 47,669.47 × 13,056.15
  4. Step 4: Simplify right side
    31,781.20x = 622,379,512.39
  5. Step 5: Solve for x
    x = 622,379,512.39/31,781.20
  6. Step 6: Final answer
    x = 19,583.26

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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.