Home / 31,890.45-44,014.21-18,469.86

Finding the Fourth Proportional to 31,890.45, 44,014.21 and 18,469.86

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Solution

The fourth proportional to 31,890.45, 44,014.21 and 18,469.86 is: 25,491.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,890.45 : 44,014.21 = 18,469.86 : x
  2. Step 2: Convert to fraction form
    31,890.45/44,014.21 = 18,469.86/x
  3. Step 3: Cross multiply
    31,890.45x = 44,014.21 × 18,469.86
  4. Step 4: Simplify right side
    31,890.45x = 812,936,323.11
  5. Step 5: Solve for x
    x = 812,936,323.11/31,890.45
  6. Step 6: Final answer
    x = 25,491.53

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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.