Home / 11,989.95-17,986.98-3,669.76

Finding the Fourth Proportional to 11,989.95, 17,986.98 and 3,669.76

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Solution

The fourth proportional to 11,989.95, 17,986.98 and 3,669.76 is: 5,505.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,989.95 : 17,986.98 = 3,669.76 : x
  2. Step 2: Convert to fraction form
    11,989.95/17,986.98 = 3,669.76/x
  3. Step 3: Cross multiply
    11,989.95x = 17,986.98 × 3,669.76
  4. Step 4: Simplify right side
    11,989.95x = 66,007,899.72
  5. Step 5: Solve for x
    x = 66,007,899.72/11,989.95
  6. Step 6: Final answer
    x = 5,505.27

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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.