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Finding the Fourth Proportional to 11,211, 15,471.18 and 6,243

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Solution

The fourth proportional to 11,211, 15,471.18 and 6,243 is: 8,615.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,211 : 15,471.18 = 6,243 : x
  2. Step 2: Convert to fraction form
    11,211/15,471.18 = 6,243/x
  3. Step 3: Cross multiply
    11,211x = 15,471.18 × 6,243
  4. Step 4: Simplify right side
    11,211x = 96,586,576.74
  5. Step 5: Solve for x
    x = 96,586,576.74/11,211
  6. Step 6: Final answer
    x = 8,615.34

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Double scale
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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.