Home / 12,802.82-19,212.93-7,857.37

Finding the Fourth Proportional to 12,802.82, 19,212.93 and 7,857.37

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Solution

The fourth proportional to 12,802.82, 19,212.93 and 7,857.37 is: 11,791.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,802.82 : 19,212.93 = 7,857.37 : x
  2. Step 2: Convert to fraction form
    12,802.82/19,212.93 = 7,857.37/x
  3. Step 3: Cross multiply
    12,802.82x = 19,212.93 × 7,857.37
  4. Step 4: Simplify right side
    12,802.82x = 150,963,099.79
  5. Step 5: Solve for x
    x = 150,963,099.79/12,802.82
  6. Step 6: Final answer
    x = 11,791.39

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1.5x scale

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.