Home / 19,278-26,580.96-12,979.44

Finding the Fourth Proportional to 19,278, 26,580.96 and 12,979.44

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Solution

The fourth proportional to 19,278, 26,580.96 and 12,979.44 is: 17,896.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,278 : 26,580.96 = 12,979.44 : x
  2. Step 2: Convert to fraction form
    19,278/26,580.96 = 12,979.44/x
  3. Step 3: Cross multiply
    19,278x = 26,580.96 × 12,979.44
  4. Step 4: Simplify right side
    19,278x = 345,005,975.46
  5. Step 5: Solve for x
    x = 345,005,975.46/19,278
  6. Step 6: Final answer
    x = 17,896.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.