Home / 31,685.22-47,528.37-8,310.78

Finding the Fourth Proportional to 31,685.22, 47,528.37 and 8,310.78

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Solution

The fourth proportional to 31,685.22, 47,528.37 and 8,310.78 is: 12,466.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,685.22 : 47,528.37 = 8,310.78 : x
  2. Step 2: Convert to fraction form
    31,685.22/47,528.37 = 8,310.78/x
  3. Step 3: Cross multiply
    31,685.22x = 47,528.37 × 8,310.78
  4. Step 4: Simplify right side
    31,685.22x = 394,997,826.83
  5. Step 5: Solve for x
    x = 394,997,826.83/31,685.22
  6. Step 6: Final answer
    x = 12,466.31

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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.