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Finding the Fourth Proportional to 12,600.99, 17,378.42 and 8,123.31

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Solution

The fourth proportional to 12,600.99, 17,378.42 and 8,123.31 is: 11,203.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,600.99 : 17,378.42 = 8,123.31 : x
  2. Step 2: Convert to fraction form
    12,600.99/17,378.42 = 8,123.31/x
  3. Step 3: Cross multiply
    12,600.99x = 17,378.42 × 8,123.31
  4. Step 4: Simplify right side
    12,600.99x = 141,170,252.35
  5. Step 5: Solve for x
    x = 141,170,252.35/12,600.99
  6. Step 6: Final answer
    x = 11,203.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.