Home / 28,910.57-39,903.25-18,821.44

Finding the Fourth Proportional to 28,910.57, 39,903.25 and 18,821.44

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Solution

The fourth proportional to 28,910.57, 39,903.25 and 18,821.44 is: 25,977.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,910.57 : 39,903.25 = 18,821.44 : x
  2. Step 2: Convert to fraction form
    28,910.57/39,903.25 = 18,821.44/x
  3. Step 3: Cross multiply
    28,910.57x = 39,903.25 × 18,821.44
  4. Step 4: Simplify right side
    28,910.57x = 751,036,478.87
  5. Step 5: Solve for x
    x = 751,036,478.87/28,910.57
  6. Step 6: Final answer
    x = 25,977.92

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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.