Home / 12,902.10-19,353.15-4,137.90

Finding the Fourth Proportional to 12,902.10, 19,353.15 and 4,137.90

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Solution

The fourth proportional to 12,902.10, 19,353.15 and 4,137.90 is: 6,206.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,902.10 : 19,353.15 = 4,137.90 : x
  2. Step 2: Convert to fraction form
    12,902.10/19,353.15 = 4,137.90/x
  3. Step 3: Cross multiply
    12,902.10x = 19,353.15 × 4,137.90
  4. Step 4: Simplify right side
    12,902.10x = 80,081,399.39
  5. Step 5: Solve for x
    x = 80,081,399.39/12,902.10
  6. Step 6: Final answer
    x = 6,206.85

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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.