Home / 15,975.24-21,992.58-11,989.68

Finding the Fourth Proportional to 15,975.24, 21,992.58 and 11,989.68

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Solution

The fourth proportional to 15,975.24, 21,992.58 and 11,989.68 is: 16,505.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,975.24 : 21,992.58 = 11,989.68 : x
  2. Step 2: Convert to fraction form
    15,975.24/21,992.58 = 11,989.68/x
  3. Step 3: Cross multiply
    15,975.24x = 21,992.58 × 11,989.68
  4. Step 4: Simplify right side
    15,975.24x = 263,683,996.57
  5. Step 5: Solve for x
    x = 263,683,996.57/15,975.24
  6. Step 6: Final answer
    x = 16,505.79

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Similar ratio
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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.