Home / 28,919.54-39,897.15-19,491.14

Finding the Fourth Proportional to 28,919.54, 39,897.15 and 19,491.14

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Solution

The fourth proportional to 28,919.54, 39,897.15 and 19,491.14 is: 26,889.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,919.54 : 39,897.15 = 19,491.14 : x
  2. Step 2: Convert to fraction form
    28,919.54/39,897.15 = 19,491.14/x
  3. Step 3: Cross multiply
    28,919.54x = 39,897.15 × 19,491.14
  4. Step 4: Simplify right side
    28,919.54x = 777,640,936.25
  5. Step 5: Solve for x
    x = 777,640,936.25/28,919.54
  6. Step 6: Final answer
    x = 26,889.81

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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.