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Finding the Fourth Proportional to 12,560.40, 17,293.92 and 10,668

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Solution

The fourth proportional to 12,560.40, 17,293.92 and 10,668 is: 14,688.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,560.40 : 17,293.92 = 10,668 : x
  2. Step 2: Convert to fraction form
    12,560.40/17,293.92 = 10,668/x
  3. Step 3: Cross multiply
    12,560.40x = 17,293.92 × 10,668
  4. Step 4: Simplify right side
    12,560.40x = 184,491,538.56
  5. Step 5: Solve for x
    x = 184,491,538.56/12,560.40
  6. Step 6: Final answer
    x = 14,688.35

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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.