Home / 28,905.30-39,893.85-20,944.62

Finding the Fourth Proportional to 28,905.30, 39,893.85 and 20,944.62

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Solution

The fourth proportional to 28,905.30, 39,893.85 and 20,944.62 is: 28,906.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,905.30 : 39,893.85 = 20,944.62 : x
  2. Step 2: Convert to fraction form
    28,905.30/39,893.85 = 20,944.62/x
  3. Step 3: Cross multiply
    28,905.30x = 39,893.85 × 20,944.62
  4. Step 4: Simplify right side
    28,905.30x = 835,561,528.59
  5. Step 5: Solve for x
    x = 835,561,528.59/28,905.30
  6. Step 6: Final answer
    x = 28,906.86

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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.