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Finding the Fourth Proportional to 17,988.40, 26,982.60 and 16,676.20

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Solution

The fourth proportional to 17,988.40, 26,982.60 and 16,676.20 is: 25,014.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,988.40 : 26,982.60 = 16,676.20 : x
  2. Step 2: Convert to fraction form
    17,988.40/26,982.60 = 16,676.20/x
  3. Step 3: Cross multiply
    17,988.40x = 26,982.60 × 16,676.20
  4. Step 4: Simplify right side
    17,988.40x = 449,967,234.12
  5. Step 5: Solve for x
    x = 449,967,234.12/17,988.40
  6. Step 6: Final answer
    x = 25,014.30

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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.