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Finding the Fourth Proportional to 12,393.72, 18,568.02 and 11,065.12

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Solution

The fourth proportional to 12,393.72, 18,568.02 and 11,065.12 is: 16,577.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,393.72 : 18,568.02 = 11,065.12 : x
  2. Step 2: Convert to fraction form
    12,393.72/18,568.02 = 11,065.12/x
  3. Step 3: Cross multiply
    12,393.72x = 18,568.02 × 11,065.12
  4. Step 4: Simplify right side
    12,393.72x = 205,457,369.46
  5. Step 5: Solve for x
    x = 205,457,369.46/12,393.72
  6. Step 6: Final answer
    x = 16,577.54

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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.