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Finding the Fourth Proportional to 12,173.55, 16,809.44 and 7,704.51

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Solution

The fourth proportional to 12,173.55, 16,809.44 and 7,704.51 is: 10,638.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,173.55 : 16,809.44 = 7,704.51 : x
  2. Step 2: Convert to fraction form
    12,173.55/16,809.44 = 7,704.51/x
  3. Step 3: Cross multiply
    12,173.55x = 16,809.44 × 7,704.51
  4. Step 4: Simplify right side
    12,173.55x = 129,508,460.05
  5. Step 5: Solve for x
    x = 129,508,460.05/12,173.55
  6. Step 6: Final answer
    x = 10,638.51

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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.