Home / 12,438.82-17,181.93-9,289.54

Finding the Fourth Proportional to 12,438.82, 17,181.93 and 9,289.54

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Solution

The fourth proportional to 12,438.82, 17,181.93 and 9,289.54 is: 12,831.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,438.82 : 17,181.93 = 9,289.54 : x
  2. Step 2: Convert to fraction form
    12,438.82/17,181.93 = 9,289.54/x
  3. Step 3: Cross multiply
    12,438.82x = 17,181.93 × 9,289.54
  4. Step 4: Simplify right side
    12,438.82x = 159,612,226.01
  5. Step 5: Solve for x
    x = 159,612,226.01/12,438.82
  6. Step 6: Final answer
    x = 12,831.78

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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.