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Finding the Fourth Proportional to 11,775.36, 17,668.48 and 7,391.68

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Solution

The fourth proportional to 11,775.36, 17,668.48 and 7,391.68 is: 11,090.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,775.36 : 17,668.48 = 7,391.68 : x
  2. Step 2: Convert to fraction form
    11,775.36/17,668.48 = 7,391.68/x
  3. Step 3: Cross multiply
    11,775.36x = 17,668.48 × 7,391.68
  4. Step 4: Simplify right side
    11,775.36x = 130,599,750.25
  5. Step 5: Solve for x
    x = 130,599,750.25/11,775.36
  6. Step 6: Final answer
    x = 11,090.93

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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.