Home / 31,847.78-47,772.14-12,127.44

Finding the Fourth Proportional to 31,847.78, 47,772.14 and 12,127.44

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Solution

The fourth proportional to 31,847.78, 47,772.14 and 12,127.44 is: 18,191.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,847.78 : 47,772.14 = 12,127.44 : x
  2. Step 2: Convert to fraction form
    31,847.78/47,772.14 = 12,127.44/x
  3. Step 3: Cross multiply
    31,847.78x = 47,772.14 × 12,127.44
  4. Step 4: Simplify right side
    31,847.78x = 579,353,761.52
  5. Step 5: Solve for x
    x = 579,353,761.52/31,847.78
  6. Step 6: Final answer
    x = 18,191.34

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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.