Home / 28,935.97-39,919.87-18,860.87

Finding the Fourth Proportional to 28,935.97, 39,919.87 and 18,860.87

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Solution

The fourth proportional to 28,935.97, 39,919.87 and 18,860.87 is: 26,020.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,935.97 : 39,919.87 = 18,860.87 : x
  2. Step 2: Convert to fraction form
    28,935.97/39,919.87 = 18,860.87/x
  3. Step 3: Cross multiply
    28,935.97x = 39,919.87 × 18,860.87
  4. Step 4: Simplify right side
    28,935.97x = 752,923,478.49
  5. Step 5: Solve for x
    x = 752,923,478.49/28,935.97
  6. Step 6: Final answer
    x = 26,020.33

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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.