Home / 19,224.45-28,836.68-8,128.26

Finding the Fourth Proportional to 19,224.45, 28,836.68 and 8,128.26

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Solution

The fourth proportional to 19,224.45, 28,836.68 and 8,128.26 is: 12,192.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,224.45 : 28,836.68 = 8,128.26 : x
  2. Step 2: Convert to fraction form
    19,224.45/28,836.68 = 8,128.26/x
  3. Step 3: Cross multiply
    19,224.45x = 28,836.68 × 8,128.26
  4. Step 4: Simplify right side
    19,224.45x = 234,391,991.94
  5. Step 5: Solve for x
    x = 234,391,991.94/19,224.45
  6. Step 6: Final answer
    x = 12,192.39

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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.