Home / 12,603.78-18,906.73-3,838.76

Finding the Fourth Proportional to 12,603.78, 18,906.73 and 3,838.76

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Solution

The fourth proportional to 12,603.78, 18,906.73 and 3,838.76 is: 5,758.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,603.78 : 18,906.73 = 3,838.76 : x
  2. Step 2: Convert to fraction form
    12,603.78/18,906.73 = 3,838.76/x
  3. Step 3: Cross multiply
    12,603.78x = 18,906.73 × 3,838.76
  4. Step 4: Simplify right side
    12,603.78x = 72,578,398.85
  5. Step 5: Solve for x
    x = 72,578,398.85/12,603.78
  6. Step 6: Final answer
    x = 5,758.46

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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.