Home / 31,829.45-43,899.30-20,499.89

Finding the Fourth Proportional to 31,829.45, 43,899.30 and 20,499.89

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Solution

The fourth proportional to 31,829.45, 43,899.30 and 20,499.89 is: 28,273.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,829.45 : 43,899.30 = 20,499.89 : x
  2. Step 2: Convert to fraction form
    31,829.45/43,899.30 = 20,499.89/x
  3. Step 3: Cross multiply
    31,829.45x = 43,899.30 × 20,499.89
  4. Step 4: Simplify right side
    31,829.45x = 899,930,601.58
  5. Step 5: Solve for x
    x = 899,930,601.58/31,829.45
  6. Step 6: Final answer
    x = 28,273.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.