Home / 13,679.37-18,877.68-8,963.64

Finding the Fourth Proportional to 13,679.37, 18,877.68 and 8,963.64

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Solution

The fourth proportional to 13,679.37, 18,877.68 and 8,963.64 is: 12,369.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,679.37 : 18,877.68 = 8,963.64 : x
  2. Step 2: Convert to fraction form
    13,679.37/18,877.68 = 8,963.64/x
  3. Step 3: Cross multiply
    13,679.37x = 18,877.68 × 8,963.64
  4. Step 4: Simplify right side
    13,679.37x = 169,212,727.56
  5. Step 5: Solve for x
    x = 169,212,727.56/13,679.37
  6. Step 6: Final answer
    x = 12,369.92

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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.