Home / 31,364.20-47,031.18-18,220.33

Finding the Fourth Proportional to 31,364.20, 47,031.18 and 18,220.33

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Solution

The fourth proportional to 31,364.20, 47,031.18 and 18,220.33 is: 27,321.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,364.20 : 47,031.18 = 18,220.33 : x
  2. Step 2: Convert to fraction form
    31,364.20/47,031.18 = 18,220.33/x
  3. Step 3: Cross multiply
    31,364.20x = 47,031.18 × 18,220.33
  4. Step 4: Simplify right side
    31,364.20x = 856,923,619.89
  5. Step 5: Solve for x
    x = 856,923,619.89/31,364.20
  6. Step 6: Final answer
    x = 27,321.71

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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.