Home / 16,911.40-25,367.10-11,986.60

Finding the Fourth Proportional to 16,911.40, 25,367.10 and 11,986.60

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Solution

The fourth proportional to 16,911.40, 25,367.10 and 11,986.60 is: 17,979.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,911.40 : 25,367.10 = 11,986.60 : x
  2. Step 2: Convert to fraction form
    16,911.40/25,367.10 = 11,986.60/x
  3. Step 3: Cross multiply
    16,911.40x = 25,367.10 × 11,986.60
  4. Step 4: Simplify right side
    16,911.40x = 304,065,280.86
  5. Step 5: Solve for x
    x = 304,065,280.86/16,911.40
  6. Step 6: Final answer
    x = 17,979.90

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1.5x scale

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.