Home / 31,380.60-43,302.18-18,631.46

Finding the Fourth Proportional to 31,380.60, 43,302.18 and 18,631.46

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Solution

The fourth proportional to 31,380.60, 43,302.18 and 18,631.46 is: 25,709.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,380.60 : 43,302.18 = 18,631.46 : x
  2. Step 2: Convert to fraction form
    31,380.60/43,302.18 = 18,631.46/x
  3. Step 3: Cross multiply
    31,380.60x = 43,302.18 × 18,631.46
  4. Step 4: Simplify right side
    31,380.60x = 806,782,834.58
  5. Step 5: Solve for x
    x = 806,782,834.58/31,380.60
  6. Step 6: Final answer
    x = 25,709.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.