Home / 31,826.20-47,755.50-13,120.60

Finding the Fourth Proportional to 31,826.20, 47,755.50 and 13,120.60

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Solution

The fourth proportional to 31,826.20, 47,755.50 and 13,120.60 is: 19,687.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,826.20 : 47,755.50 = 13,120.60 : x
  2. Step 2: Convert to fraction form
    31,826.20/47,755.50 = 13,120.60/x
  3. Step 3: Cross multiply
    31,826.20x = 47,755.50 × 13,120.60
  4. Step 4: Simplify right side
    31,826.20x = 626,580,813.30
  5. Step 5: Solve for x
    x = 626,580,813.30/31,826.20
  6. Step 6: Final answer
    x = 19,687.58

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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.