Home / 28,540.80-42,789.96-13,735.80

Finding the Fourth Proportional to 28,540.80, 42,789.96 and 13,735.80

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Solution

The fourth proportional to 28,540.80, 42,789.96 and 13,735.80 is: 20,593.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,540.80 : 42,789.96 = 13,735.80 : x
  2. Step 2: Convert to fraction form
    28,540.80/42,789.96 = 13,735.80/x
  3. Step 3: Cross multiply
    28,540.80x = 42,789.96 × 13,735.80
  4. Step 4: Simplify right side
    28,540.80x = 587,754,332.57
  5. Step 5: Solve for x
    x = 587,754,332.57/28,540.80
  6. Step 6: Final answer
    x = 20,593.48

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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.