Home / 20,277.18-27,989.19-11,893.50

Finding the Fourth Proportional to 20,277.18, 27,989.19 and 11,893.50

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Solution

The fourth proportional to 20,277.18, 27,989.19 and 11,893.50 is: 16,416.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,277.18 : 27,989.19 = 11,893.50 : x
  2. Step 2: Convert to fraction form
    20,277.18/27,989.19 = 11,893.50/x
  3. Step 3: Cross multiply
    20,277.18x = 27,989.19 × 11,893.50
  4. Step 4: Simplify right side
    20,277.18x = 332,889,431.27
  5. Step 5: Solve for x
    x = 332,889,431.27/20,277.18
  6. Step 6: Final answer
    x = 16,416.95

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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.