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Finding the Fourth Proportional to 12,324.88, 16,995.04 and 11,129.55

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Solution

The fourth proportional to 12,324.88, 16,995.04 and 11,129.55 is: 15,346.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,324.88 : 16,995.04 = 11,129.55 : x
  2. Step 2: Convert to fraction form
    12,324.88/16,995.04 = 11,129.55/x
  3. Step 3: Cross multiply
    12,324.88x = 16,995.04 × 11,129.55
  4. Step 4: Simplify right side
    12,324.88x = 189,147,182.78
  5. Step 5: Solve for x
    x = 189,147,182.78/12,324.88
  6. Step 6: Final answer
    x = 15,346.77

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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.