Home / 31,896.45-47,847.87-12,191.58

Finding the Fourth Proportional to 31,896.45, 47,847.87 and 12,191.58

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Solution

The fourth proportional to 31,896.45, 47,847.87 and 12,191.58 is: 18,288.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,896.45 : 47,847.87 = 12,191.58 : x
  2. Step 2: Convert to fraction form
    31,896.45/47,847.87 = 12,191.58/x
  3. Step 3: Cross multiply
    31,896.45x = 47,847.87 × 12,191.58
  4. Step 4: Simplify right side
    31,896.45x = 583,341,134.93
  5. Step 5: Solve for x
    x = 583,341,134.93/31,896.45
  6. Step 6: Final answer
    x = 18,288.59

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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.