Home / 11,989.50-17,986.92-3,670.68

Finding the Fourth Proportional to 11,989.50, 17,986.92 and 3,670.68

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Solution

The fourth proportional to 11,989.50, 17,986.92 and 3,670.68 is: 5,506.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,989.50 : 17,986.92 = 3,670.68 : x
  2. Step 2: Convert to fraction form
    11,989.50/17,986.92 = 3,670.68/x
  3. Step 3: Cross multiply
    11,989.50x = 17,986.92 × 3,670.68
  4. Step 4: Simplify right side
    11,989.50x = 66,024,227.51
  5. Step 5: Solve for x
    x = 66,024,227.51/11,989.50
  6. Step 6: Final answer
    x = 5,506.84

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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.