Home / 12,942.28-19,408.63-4,620.07

Finding the Fourth Proportional to 12,942.28, 19,408.63 and 4,620.07

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Solution

The fourth proportional to 12,942.28, 19,408.63 and 4,620.07 is: 6,928.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,942.28 : 19,408.63 = 4,620.07 : x
  2. Step 2: Convert to fraction form
    12,942.28/19,408.63 = 4,620.07/x
  3. Step 3: Cross multiply
    12,942.28x = 19,408.63 × 4,620.07
  4. Step 4: Simplify right side
    12,942.28x = 89,669,229.20
  5. Step 5: Solve for x
    x = 89,669,229.20/12,942.28
  6. Step 6: Final answer
    x = 6,928.40

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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.