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Finding the Fourth Proportional to 11,719.54, 17,585.08 and 5,479.98

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Solution

The fourth proportional to 11,719.54, 17,585.08 and 5,479.98 is: 8,222.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,719.54 : 17,585.08 = 5,479.98 : x
  2. Step 2: Convert to fraction form
    11,719.54/17,585.08 = 5,479.98/x
  3. Step 3: Cross multiply
    11,719.54x = 17,585.08 × 5,479.98
  4. Step 4: Simplify right side
    11,719.54x = 96,365,886.70
  5. Step 5: Solve for x
    x = 96,365,886.70/11,719.54
  6. Step 6: Final answer
    x = 8,222.67

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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.