Home / 15,481.42-21,369.81-9,193.75

Finding the Fourth Proportional to 15,481.42, 21,369.81 and 9,193.75

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Solution

The fourth proportional to 15,481.42, 21,369.81 and 9,193.75 is: 12,690.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,481.42 : 21,369.81 = 9,193.75 : x
  2. Step 2: Convert to fraction form
    15,481.42/21,369.81 = 9,193.75/x
  3. Step 3: Cross multiply
    15,481.42x = 21,369.81 × 9,193.75
  4. Step 4: Simplify right side
    15,481.42x = 196,468,690.69
  5. Step 5: Solve for x
    x = 196,468,690.69/15,481.42
  6. Step 6: Final answer
    x = 12,690.61

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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.