Home / 13,121.78-19,677.88-4,799.33

Finding the Fourth Proportional to 13,121.78, 19,677.88 and 4,799.33

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Solution

The fourth proportional to 13,121.78, 19,677.88 and 4,799.33 is: 7,197.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,121.78 : 19,677.88 = 4,799.33 : x
  2. Step 2: Convert to fraction form
    13,121.78/19,677.88 = 4,799.33/x
  3. Step 3: Cross multiply
    13,121.78x = 19,677.88 × 4,799.33
  4. Step 4: Simplify right side
    13,121.78x = 94,440,639.82
  5. Step 5: Solve for x
    x = 94,440,639.82/13,121.78
  6. Step 6: Final answer
    x = 7,197.24

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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.