Home / 21,755.23-30,022.23-12,323.79

Finding the Fourth Proportional to 21,755.23, 30,022.23 and 12,323.79

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Solution

The fourth proportional to 21,755.23, 30,022.23 and 12,323.79 is: 17,006.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,755.23 : 30,022.23 = 12,323.79 : x
  2. Step 2: Convert to fraction form
    21,755.23/30,022.23 = 12,323.79/x
  3. Step 3: Cross multiply
    21,755.23x = 30,022.23 × 12,323.79
  4. Step 4: Simplify right side
    21,755.23x = 369,987,657.85
  5. Step 5: Solve for x
    x = 369,987,657.85/21,755.23
  6. Step 6: Final answer
    x = 17,006.84

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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.