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Finding the Fourth Proportional to 12,163.24, 16,774.08 and 7,679.24

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Solution

The fourth proportional to 12,163.24, 16,774.08 and 7,679.24 is: 10,590.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,163.24 : 16,774.08 = 7,679.24 : x
  2. Step 2: Convert to fraction form
    12,163.24/16,774.08 = 7,679.24/x
  3. Step 3: Cross multiply
    12,163.24x = 16,774.08 × 7,679.24
  4. Step 4: Simplify right side
    12,163.24x = 128,812,186.10
  5. Step 5: Solve for x
    x = 128,812,186.10/12,163.24
  6. Step 6: Final answer
    x = 10,590.29

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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.