Home / 31,517.74-47,274.99-8,143.57

Finding the Fourth Proportional to 31,517.74, 47,274.99 and 8,143.57

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Solution

The fourth proportional to 31,517.74, 47,274.99 and 8,143.57 is: 12,214.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,517.74 : 47,274.99 = 8,143.57 : x
  2. Step 2: Convert to fraction form
    31,517.74/47,274.99 = 8,143.57/x
  3. Step 3: Cross multiply
    31,517.74x = 47,274.99 × 8,143.57
  4. Step 4: Simplify right side
    31,517.74x = 384,987,190.31
  5. Step 5: Solve for x
    x = 384,987,190.31/31,517.74
  6. Step 6: Final answer
    x = 12,214.94

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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.