Home / 25,631.87-38,449.62-7,860.22

Finding the Fourth Proportional to 25,631.87, 38,449.62 and 7,860.22

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Solution

The fourth proportional to 25,631.87, 38,449.62 and 7,860.22 is: 11,790.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,631.87 : 38,449.62 = 7,860.22 : x
  2. Step 2: Convert to fraction form
    25,631.87/38,449.62 = 7,860.22/x
  3. Step 3: Cross multiply
    25,631.87x = 38,449.62 × 7,860.22
  4. Step 4: Simplify right side
    25,631.87x = 302,222,375.99
  5. Step 5: Solve for x
    x = 302,222,375.99/25,631.87
  6. Step 6: Final answer
    x = 11,790.89

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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.