Home / 13,211.36-19,819.63-4,891.45

Finding the Fourth Proportional to 13,211.36, 19,819.63 and 4,891.45

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Solution

The fourth proportional to 13,211.36, 19,819.63 and 4,891.45 is: 7,338.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,211.36 : 19,819.63 = 4,891.45 : x
  2. Step 2: Convert to fraction form
    13,211.36/19,819.63 = 4,891.45/x
  3. Step 3: Cross multiply
    13,211.36x = 19,819.63 × 4,891.45
  4. Step 4: Simplify right side
    13,211.36x = 96,946,729.16
  5. Step 5: Solve for x
    x = 96,946,729.16/13,211.36
  6. Step 6: Final answer
    x = 7,338.13

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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.