Home / 12,894.12-19,344.42-4,129.92

Finding the Fourth Proportional to 12,894.12, 19,344.42 and 4,129.92

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Solution

The fourth proportional to 12,894.12, 19,344.42 and 4,129.92 is: 6,195.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,894.12 : 19,344.42 = 4,129.92 : x
  2. Step 2: Convert to fraction form
    12,894.12/19,344.42 = 4,129.92/x
  3. Step 3: Cross multiply
    12,894.12x = 19,344.42 × 4,129.92
  4. Step 4: Simplify right side
    12,894.12x = 79,890,907.05
  5. Step 5: Solve for x
    x = 79,890,907.05/12,894.12
  6. Step 6: Final answer
    x = 6,195.92

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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.