Home / 31,823.56-47,731.60-8,451.80

Finding the Fourth Proportional to 31,823.56, 47,731.60 and 8,451.80

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Solution

The fourth proportional to 31,823.56, 47,731.60 and 8,451.80 is: 12,676.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,823.56 : 47,731.60 = 8,451.80 : x
  2. Step 2: Convert to fraction form
    31,823.56/47,731.60 = 8,451.80/x
  3. Step 3: Cross multiply
    31,823.56x = 47,731.60 × 8,451.80
  4. Step 4: Simplify right side
    31,823.56x = 403,417,936.88
  5. Step 5: Solve for x
    x = 403,417,936.88/31,823.56
  6. Step 6: Final answer
    x = 12,676.71

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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.