Home / 12,255.40-16,986.19-11,089

Finding the Fourth Proportional to 12,255.40, 16,986.19 and 11,089

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Solution

The fourth proportional to 12,255.40, 16,986.19 and 11,089 is: 15,369.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,255.40 : 16,986.19 = 11,089 : x
  2. Step 2: Convert to fraction form
    12,255.40/16,986.19 = 11,089/x
  3. Step 3: Cross multiply
    12,255.40x = 16,986.19 × 11,089
  4. Step 4: Simplify right side
    12,255.40x = 188,359,860.91
  5. Step 5: Solve for x
    x = 188,359,860.91/12,255.40
  6. Step 6: Final answer
    x = 15,369.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.