Home / 31,921.20-47,885.09-12,216.33

Finding the Fourth Proportional to 31,921.20, 47,885.09 and 12,216.33

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Solution

The fourth proportional to 31,921.20, 47,885.09 and 12,216.33 is: 18,325.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,921.20 : 47,885.09 = 12,216.33 : x
  2. Step 2: Convert to fraction form
    31,921.20/47,885.09 = 12,216.33/x
  3. Step 3: Cross multiply
    31,921.20x = 47,885.09 × 12,216.33
  4. Step 4: Simplify right side
    31,921.20x = 584,980,000.44
  5. Step 5: Solve for x
    x = 584,980,000.44/31,921.20
  6. Step 6: Final answer
    x = 18,325.75

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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.