Home / 12,867.15-19,324.50-7,704.75

Finding the Fourth Proportional to 12,867.15, 19,324.50 and 7,704.75

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Solution

The fourth proportional to 12,867.15, 19,324.50 and 7,704.75 is: 11,571.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,867.15 : 19,324.50 = 7,704.75 : x
  2. Step 2: Convert to fraction form
    12,867.15/19,324.50 = 7,704.75/x
  3. Step 3: Cross multiply
    12,867.15x = 19,324.50 × 7,704.75
  4. Step 4: Simplify right side
    12,867.15x = 148,890,441.38
  5. Step 5: Solve for x
    x = 148,890,441.38/12,867.15
  6. Step 6: Final answer
    x = 11,571.36

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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.