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Finding the Fourth Proportional to 12,759.50, 19,147.36 and 6,603.50

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Solution

The fourth proportional to 12,759.50, 19,147.36 and 6,603.50 is: 9,909.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,759.50 : 19,147.36 = 6,603.50 : x
  2. Step 2: Convert to fraction form
    12,759.50/19,147.36 = 6,603.50/x
  3. Step 3: Cross multiply
    12,759.50x = 19,147.36 × 6,603.50
  4. Step 4: Simplify right side
    12,759.50x = 126,439,591.76
  5. Step 5: Solve for x
    x = 126,439,591.76/12,759.50
  6. Step 6: Final answer
    x = 9,909.45

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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.