Home / 31,837.56-47,770.14-12,121.72

Finding the Fourth Proportional to 31,837.56, 47,770.14 and 12,121.72

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Solution

The fourth proportional to 31,837.56, 47,770.14 and 12,121.72 is: 18,187.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,837.56 : 47,770.14 = 12,121.72 : x
  2. Step 2: Convert to fraction form
    31,837.56/47,770.14 = 12,121.72/x
  3. Step 3: Cross multiply
    31,837.56x = 47,770.14 × 12,121.72
  4. Step 4: Simplify right side
    31,837.56x = 579,056,261.44
  5. Step 5: Solve for x
    x = 579,056,261.44/31,837.56
  6. Step 6: Final answer
    x = 18,187.83

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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.