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Finding the Fourth Proportional to 31,992.81, 47,944.11 and 15,107.80

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Solution

The fourth proportional to 31,992.81, 47,944.11 and 15,107.80 is: 22,640.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,992.81 : 47,944.11 = 15,107.80 : x
  2. Step 2: Convert to fraction form
    31,992.81/47,944.11 = 15,107.80/x
  3. Step 3: Cross multiply
    31,992.81x = 47,944.11 × 15,107.80
  4. Step 4: Simplify right side
    31,992.81x = 724,330,025.06
  5. Step 5: Solve for x
    x = 724,330,025.06/31,992.81
  6. Step 6: Final answer
    x = 22,640.40

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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.