Home / 19,278-28,920.12-6,801.36

Finding the Fourth Proportional to 19,278, 28,920.12 and 6,801.36

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Solution

The fourth proportional to 19,278, 28,920.12 and 6,801.36 is: 10,203.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,278 : 28,920.12 = 6,801.36 : x
  2. Step 2: Convert to fraction form
    19,278/28,920.12 = 6,801.36/x
  3. Step 3: Cross multiply
    19,278x = 28,920.12 × 6,801.36
  4. Step 4: Simplify right side
    19,278x = 196,696,147.36
  5. Step 5: Solve for x
    x = 196,696,147.36/19,278
  6. Step 6: Final answer
    x = 10,203.14

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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.