Home / 12,923.78-19,378.44-5,021.34

Finding the Fourth Proportional to 12,923.78, 19,378.44 and 5,021.34

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Solution

The fourth proportional to 12,923.78, 19,378.44 and 5,021.34 is: 7,529.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,923.78 : 19,378.44 = 5,021.34 : x
  2. Step 2: Convert to fraction form
    12,923.78/19,378.44 = 5,021.34/x
  3. Step 3: Cross multiply
    12,923.78x = 19,378.44 × 5,021.34
  4. Step 4: Simplify right side
    12,923.78x = 97,305,735.91
  5. Step 5: Solve for x
    x = 97,305,735.91/12,923.78
  6. Step 6: Final answer
    x = 7,529.20

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1.5x scale

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.