Home / 11,091.36-15,307.60-7,116.96

Finding the Fourth Proportional to 11,091.36, 15,307.60 and 7,116.96

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Solution

The fourth proportional to 11,091.36, 15,307.60 and 7,116.96 is: 9,822.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,091.36 : 15,307.60 = 7,116.96 : x
  2. Step 2: Convert to fraction form
    11,091.36/15,307.60 = 7,116.96/x
  3. Step 3: Cross multiply
    11,091.36x = 15,307.60 × 7,116.96
  4. Step 4: Simplify right side
    11,091.36x = 108,943,576.90
  5. Step 5: Solve for x
    x = 108,943,576.90/11,091.36
  6. Step 6: Final answer
    x = 9,822.38

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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.