Home / 28,855.30-43,278.61-9,131.29

Finding the Fourth Proportional to 28,855.30, 43,278.61 and 9,131.29

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Solution

The fourth proportional to 28,855.30, 43,278.61 and 9,131.29 is: 13,695.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,855.30 : 43,278.61 = 9,131.29 : x
  2. Step 2: Convert to fraction form
    28,855.30/43,278.61 = 9,131.29/x
  3. Step 3: Cross multiply
    28,855.30x = 43,278.61 × 9,131.29
  4. Step 4: Simplify right side
    28,855.30x = 395,189,493.05
  5. Step 5: Solve for x
    x = 395,189,493.05/28,855.30
  6. Step 6: Final answer
    x = 13,695.56

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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.