Home / 13,942.15-19,240.47-7,974.37

Finding the Fourth Proportional to 13,942.15, 19,240.47 and 7,974.37

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Solution

The fourth proportional to 13,942.15, 19,240.47 and 7,974.37 is: 11,004.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,942.15 : 19,240.47 = 7,974.37 : x
  2. Step 2: Convert to fraction form
    13,942.15/19,240.47 = 7,974.37/x
  3. Step 3: Cross multiply
    13,942.15x = 19,240.47 × 7,974.37
  4. Step 4: Simplify right side
    13,942.15x = 153,430,626.75
  5. Step 5: Solve for x
    x = 153,430,626.75/13,942.15
  6. Step 6: Final answer
    x = 11,004.80

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1.5x scale

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.