Home / 31,138.68-46,709.46-8,951.56

Finding the Fourth Proportional to 31,138.68, 46,709.46 and 8,951.56

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Solution

The fourth proportional to 31,138.68, 46,709.46 and 8,951.56 is: 13,427.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,138.68 : 46,709.46 = 8,951.56 : x
  2. Step 2: Convert to fraction form
    31,138.68/46,709.46 = 8,951.56/x
  3. Step 3: Cross multiply
    31,138.68x = 46,709.46 × 8,951.56
  4. Step 4: Simplify right side
    31,138.68x = 418,122,679.72
  5. Step 5: Solve for x
    x = 418,122,679.72/31,138.68
  6. Step 6: Final answer
    x = 13,427.76

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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.