Home / 28,305.45-39,078.60-18,753.44

Finding the Fourth Proportional to 28,305.45, 39,078.60 and 18,753.44

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Solution

The fourth proportional to 28,305.45, 39,078.60 and 18,753.44 is: 25,891.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,305.45 : 39,078.60 = 18,753.44 : x
  2. Step 2: Convert to fraction form
    28,305.45/39,078.60 = 18,753.44/x
  3. Step 3: Cross multiply
    28,305.45x = 39,078.60 × 18,753.44
  4. Step 4: Simplify right side
    28,305.45x = 732,857,984.99
  5. Step 5: Solve for x
    x = 732,857,984.99/28,305.45
  6. Step 6: Final answer
    x = 25,891.06

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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.