Home / 13,926.78-20,865.85-11,601.72

Finding the Fourth Proportional to 13,926.78, 20,865.85 and 11,601.72

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Solution

The fourth proportional to 13,926.78, 20,865.85 and 11,601.72 is: 17,382.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,926.78 : 20,865.85 = 11,601.72 : x
  2. Step 2: Convert to fraction form
    13,926.78/20,865.85 = 11,601.72/x
  3. Step 3: Cross multiply
    13,926.78x = 20,865.85 × 11,601.72
  4. Step 4: Simplify right side
    13,926.78x = 242,079,749.26
  5. Step 5: Solve for x
    x = 242,079,749.26/13,926.78
  6. Step 6: Final answer
    x = 17,382.32

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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.