Home / 13,110.91-19,673.19-5,211.74

Finding the Fourth Proportional to 13,110.91, 19,673.19 and 5,211.74

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Solution

The fourth proportional to 13,110.91, 19,673.19 and 5,211.74 is: 7,820.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,110.91 : 19,673.19 = 5,211.74 : x
  2. Step 2: Convert to fraction form
    13,110.91/19,673.19 = 5,211.74/x
  3. Step 3: Cross multiply
    13,110.91x = 19,673.19 × 5,211.74
  4. Step 4: Simplify right side
    13,110.91x = 102,531,452.88
  5. Step 5: Solve for x
    x = 102,531,452.88/13,110.91
  6. Step 6: Final answer
    x = 7,820.32

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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.