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Finding the Fourth Proportional to 11,122, 15,348.36 and 6,930.25

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Solution

The fourth proportional to 11,122, 15,348.36 and 6,930.25 is: 9,563.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,122 : 15,348.36 = 6,930.25 : x
  2. Step 2: Convert to fraction form
    11,122/15,348.36 = 6,930.25/x
  3. Step 3: Cross multiply
    11,122x = 15,348.36 × 6,930.25
  4. Step 4: Simplify right side
    11,122x = 106,367,971.89
  5. Step 5: Solve for x
    x = 106,367,971.89/11,122
  6. Step 6: Final answer
    x = 9,563.75

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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.