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Finding the Fourth Proportional to 16,638.36, 24,962.03 and 7,279.21

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Solution

The fourth proportional to 16,638.36, 24,962.03 and 7,279.21 is: 10,920.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,638.36 : 24,962.03 = 7,279.21 : x
  2. Step 2: Convert to fraction form
    16,638.36/24,962.03 = 7,279.21/x
  3. Step 3: Cross multiply
    16,638.36x = 24,962.03 × 7,279.21
  4. Step 4: Simplify right side
    16,638.36x = 181,703,858.40
  5. Step 5: Solve for x
    x = 181,703,858.40/16,638.36
  6. Step 6: Final answer
    x = 10,920.78

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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.