Home / 31,757.08-47,640.48-8,385.34

Finding the Fourth Proportional to 31,757.08, 47,640.48 and 8,385.34

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Solution

The fourth proportional to 31,757.08, 47,640.48 and 8,385.34 is: 12,579.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,757.08 : 47,640.48 = 8,385.34 : x
  2. Step 2: Convert to fraction form
    31,757.08/47,640.48 = 8,385.34/x
  3. Step 3: Cross multiply
    31,757.08x = 47,640.48 × 8,385.34
  4. Step 4: Simplify right side
    31,757.08x = 399,481,622.56
  5. Step 5: Solve for x
    x = 399,481,622.56/31,757.08
  6. Step 6: Final answer
    x = 12,579.29

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1.5x scale

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.