Home / 11,004.06-15,170.70-7,220.55

Finding the Fourth Proportional to 11,004.06, 15,170.70 and 7,220.55

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Solution

The fourth proportional to 11,004.06, 15,170.70 and 7,220.55 is: 9,954.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,004.06 : 15,170.70 = 7,220.55 : x
  2. Step 2: Convert to fraction form
    11,004.06/15,170.70 = 7,220.55/x
  3. Step 3: Cross multiply
    11,004.06x = 15,170.70 × 7,220.55
  4. Step 4: Simplify right side
    11,004.06x = 109,540,797.89
  5. Step 5: Solve for x
    x = 109,540,797.89/11,004.06
  6. Step 6: Final answer
    x = 9,954.58

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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.