Home / 11,185.06-15,428.93-6,986.02

Finding the Fourth Proportional to 11,185.06, 15,428.93 and 6,986.02

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Solution

The fourth proportional to 11,185.06, 15,428.93 and 6,986.02 is: 9,636.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,185.06 : 15,428.93 = 6,986.02 : x
  2. Step 2: Convert to fraction form
    11,185.06/15,428.93 = 6,986.02/x
  3. Step 3: Cross multiply
    11,185.06x = 15,428.93 × 6,986.02
  4. Step 4: Simplify right side
    11,185.06x = 107,786,813.56
  5. Step 5: Solve for x
    x = 107,786,813.56/11,185.06
  6. Step 6: Final answer
    x = 9,636.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.