Home / 31,336.20-47,015.10-13,818.60

Finding the Fourth Proportional to 31,336.20, 47,015.10 and 13,818.60

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Solution

The fourth proportional to 31,336.20, 47,015.10 and 13,818.60 is: 20,732.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,336.20 : 47,015.10 = 13,818.60 : x
  2. Step 2: Convert to fraction form
    31,336.20/47,015.10 = 13,818.60/x
  3. Step 3: Cross multiply
    31,336.20x = 47,015.10 × 13,818.60
  4. Step 4: Simplify right side
    31,336.20x = 649,682,860.86
  5. Step 5: Solve for x
    x = 649,682,860.86/31,336.20
  6. Step 6: Final answer
    x = 20,732.66

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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.