Home / 10,428.46-15,645.11-3,408.79

Finding the Fourth Proportional to 10,428.46, 15,645.11 and 3,408.79

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Solution

The fourth proportional to 10,428.46, 15,645.11 and 3,408.79 is: 5,113.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,428.46 : 15,645.11 = 3,408.79 : x
  2. Step 2: Convert to fraction form
    10,428.46/15,645.11 = 3,408.79/x
  3. Step 3: Cross multiply
    10,428.46x = 15,645.11 × 3,408.79
  4. Step 4: Simplify right side
    10,428.46x = 53,330,894.52
  5. Step 5: Solve for x
    x = 53,330,894.52/10,428.46
  6. Step 6: Final answer
    x = 5,113.98

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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.