Home / 12,958.19-19,432.42-4,190.75

Finding the Fourth Proportional to 12,958.19, 19,432.42 and 4,190.75

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Solution

The fourth proportional to 12,958.19, 19,432.42 and 4,190.75 is: 6,284.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,958.19 : 19,432.42 = 4,190.75 : x
  2. Step 2: Convert to fraction form
    12,958.19/19,432.42 = 4,190.75/x
  3. Step 3: Cross multiply
    12,958.19x = 19,432.42 × 4,190.75
  4. Step 4: Simplify right side
    12,958.19x = 81,436,414.12
  5. Step 5: Solve for x
    x = 81,436,414.12/12,958.19
  6. Step 6: Final answer
    x = 6,284.55

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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.