Home / 12,960.21-19,443.40-4,195.12

Finding the Fourth Proportional to 12,960.21, 19,443.40 and 4,195.12

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Solution

The fourth proportional to 12,960.21, 19,443.40 and 4,195.12 is: 6,293.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,960.21 : 19,443.40 = 4,195.12 : x
  2. Step 2: Convert to fraction form
    12,960.21/19,443.40 = 4,195.12/x
  3. Step 3: Cross multiply
    12,960.21x = 19,443.40 × 4,195.12
  4. Step 4: Simplify right side
    12,960.21x = 81,567,396.21
  5. Step 5: Solve for x
    x = 81,567,396.21/12,960.21
  6. Step 6: Final answer
    x = 6,293.68

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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.