Home / 28,870.80-43,305.73-9,149.33

Finding the Fourth Proportional to 28,870.80, 43,305.73 and 9,149.33

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Solution

The fourth proportional to 28,870.80, 43,305.73 and 9,149.33 is: 13,723.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,870.80 : 43,305.73 = 9,149.33 : x
  2. Step 2: Convert to fraction form
    28,870.80/43,305.73 = 9,149.33/x
  3. Step 3: Cross multiply
    28,870.80x = 43,305.73 × 9,149.33
  4. Step 4: Simplify right side
    28,870.80x = 396,218,175.26
  5. Step 5: Solve for x
    x = 396,218,175.26/28,870.80
  6. Step 6: Final answer
    x = 13,723.84

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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.