Home / 31,819.92-47,729.88-8,445.75

Finding the Fourth Proportional to 31,819.92, 47,729.88 and 8,445.75

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Solution

The fourth proportional to 31,819.92, 47,729.88 and 8,445.75 is: 12,668.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,819.92 : 47,729.88 = 8,445.75 : x
  2. Step 2: Convert to fraction form
    31,819.92/47,729.88 = 8,445.75/x
  3. Step 3: Cross multiply
    31,819.92x = 47,729.88 × 8,445.75
  4. Step 4: Simplify right side
    31,819.92x = 403,114,634.01
  5. Step 5: Solve for x
    x = 403,114,634.01/31,819.92
  6. Step 6: Final answer
    x = 12,668.63

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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.