Home / 19,738.72-29,619.28-7,257.12

Finding the Fourth Proportional to 19,738.72, 29,619.28 and 7,257.12

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Solution

The fourth proportional to 19,738.72, 29,619.28 and 7,257.12 is: 10,889.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,738.72 : 29,619.28 = 7,257.12 : x
  2. Step 2: Convert to fraction form
    19,738.72/29,619.28 = 7,257.12/x
  3. Step 3: Cross multiply
    19,738.72x = 29,619.28 × 7,257.12
  4. Step 4: Simplify right side
    19,738.72x = 214,950,669.27
  5. Step 5: Solve for x
    x = 214,950,669.27/19,738.72
  6. Step 6: Final answer
    x = 10,889.80

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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.