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Finding the Fourth Proportional to 11,990.64, 17,892.15 and 10,745.40

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Solution

The fourth proportional to 11,990.64, 17,892.15 and 10,745.40 is: 16,034.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,990.64 : 17,892.15 = 10,745.40 : x
  2. Step 2: Convert to fraction form
    11,990.64/17,892.15 = 10,745.40/x
  3. Step 3: Cross multiply
    11,990.64x = 17,892.15 × 10,745.40
  4. Step 4: Simplify right side
    11,990.64x = 192,258,308.61
  5. Step 5: Solve for x
    x = 192,258,308.61/11,990.64
  6. Step 6: Final answer
    x = 16,034.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.