Home / 12,912.59-19,350.58-5,408.07

Finding the Fourth Proportional to 12,912.59, 19,350.58 and 5,408.07

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Solution

The fourth proportional to 12,912.59, 19,350.58 and 5,408.07 is: 8,104.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,912.59 : 19,350.58 = 5,408.07 : x
  2. Step 2: Convert to fraction form
    12,912.59/19,350.58 = 5,408.07/x
  3. Step 3: Cross multiply
    12,912.59x = 19,350.58 × 5,408.07
  4. Step 4: Simplify right side
    12,912.59x = 104,649,167.39
  5. Step 5: Solve for x
    x = 104,649,167.39/12,912.59
  6. Step 6: Final answer
    x = 8,104.43

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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.