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Finding the Fourth Proportional to 12,606.12, 18,889.02 and 10,751.40

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Solution

The fourth proportional to 12,606.12, 18,889.02 and 10,751.40 is: 16,109.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,606.12 : 18,889.02 = 10,751.40 : x
  2. Step 2: Convert to fraction form
    12,606.12/18,889.02 = 10,751.40/x
  3. Step 3: Cross multiply
    12,606.12x = 18,889.02 × 10,751.40
  4. Step 4: Simplify right side
    12,606.12x = 203,083,409.63
  5. Step 5: Solve for x
    x = 203,083,409.63/12,606.12
  6. Step 6: Final answer
    x = 16,109.91

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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.