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Finding the Fourth Proportional to 12,868.98, 19,302.99 and 4,660.98

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Solution

The fourth proportional to 12,868.98, 19,302.99 and 4,660.98 is: 6,991.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,868.98 : 19,302.99 = 4,660.98 : x
  2. Step 2: Convert to fraction form
    12,868.98/19,302.99 = 4,660.98/x
  3. Step 3: Cross multiply
    12,868.98x = 19,302.99 × 4,660.98
  4. Step 4: Simplify right side
    12,868.98x = 89,970,850.33
  5. Step 5: Solve for x
    x = 89,970,850.33/12,868.98
  6. Step 6: Final answer
    x = 6,991.30

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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.