Home / 13,121.70-19,670.74-4,795.90

Finding the Fourth Proportional to 13,121.70, 19,670.74 and 4,795.90

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Solution

The fourth proportional to 13,121.70, 19,670.74 and 4,795.90 is: 7,189.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,121.70 : 19,670.74 = 4,795.90 : x
  2. Step 2: Convert to fraction form
    13,121.70/19,670.74 = 4,795.90/x
  3. Step 3: Cross multiply
    13,121.70x = 19,670.74 × 4,795.90
  4. Step 4: Simplify right side
    13,121.70x = 94,338,901.97
  5. Step 5: Solve for x
    x = 94,338,901.97/13,121.70
  6. Step 6: Final answer
    x = 7,189.53

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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.