Home / 15,721.73-23,579.81-5,191.90

Finding the Fourth Proportional to 15,721.73, 23,579.81 and 5,191.90

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Solution

The fourth proportional to 15,721.73, 23,579.81 and 5,191.90 is: 7,786.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,721.73 : 23,579.81 = 5,191.90 : x
  2. Step 2: Convert to fraction form
    15,721.73/23,579.81 = 5,191.90/x
  3. Step 3: Cross multiply
    15,721.73x = 23,579.81 × 5,191.90
  4. Step 4: Simplify right side
    15,721.73x = 122,424,015.54
  5. Step 5: Solve for x
    x = 122,424,015.54/15,721.73
  6. Step 6: Final answer
    x = 7,786.93

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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.