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Finding the Fourth Proportional to 12,759.67, 19,145.99 and 6,603.67

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Solution

The fourth proportional to 12,759.67, 19,145.99 and 6,603.67 is: 9,908.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,759.67 : 19,145.99 = 6,603.67 : x
  2. Step 2: Convert to fraction form
    12,759.67/19,145.99 = 6,603.67/x
  3. Step 3: Cross multiply
    12,759.67x = 19,145.99 × 6,603.67
  4. Step 4: Simplify right side
    12,759.67x = 126,433,799.78
  5. Step 5: Solve for x
    x = 126,433,799.78/12,759.67
  6. Step 6: Final answer
    x = 9,908.86

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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.