Home / 19,738.50-27,239.13-11,355

Finding the Fourth Proportional to 19,738.50, 27,239.13 and 11,355

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Solution

The fourth proportional to 19,738.50, 27,239.13 and 11,355 is: 15,669.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,738.50 : 27,239.13 = 11,355 : x
  2. Step 2: Convert to fraction form
    19,738.50/27,239.13 = 11,355/x
  3. Step 3: Cross multiply
    19,738.50x = 27,239.13 × 11,355
  4. Step 4: Simplify right side
    19,738.50x = 309,300,321.15
  5. Step 5: Solve for x
    x = 309,300,321.15/19,738.50
  6. Step 6: Final answer
    x = 15,669.90

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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.