Home / 13,986.06-20,968.11-5,216.19

Finding the Fourth Proportional to 13,986.06, 20,968.11 and 5,216.19

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Solution

The fourth proportional to 13,986.06, 20,968.11 and 5,216.19 is: 7,820.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,986.06 : 20,968.11 = 5,216.19 : x
  2. Step 2: Convert to fraction form
    13,986.06/20,968.11 = 5,216.19/x
  3. Step 3: Cross multiply
    13,986.06x = 20,968.11 × 5,216.19
  4. Step 4: Simplify right side
    13,986.06x = 109,373,645.70
  5. Step 5: Solve for x
    x = 109,373,645.70/13,986.06
  6. Step 6: Final answer
    x = 7,820.19

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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.