Home / 20,755.08-28,641.60-11,323.80

Finding the Fourth Proportional to 20,755.08, 28,641.60 and 11,323.80

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Solution

The fourth proportional to 20,755.08, 28,641.60 and 11,323.80 is: 15,626.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,755.08 : 28,641.60 = 11,323.80 : x
  2. Step 2: Convert to fraction form
    20,755.08/28,641.60 = 11,323.80/x
  3. Step 3: Cross multiply
    20,755.08x = 28,641.60 × 11,323.80
  4. Step 4: Simplify right side
    20,755.08x = 324,331,750.08
  5. Step 5: Solve for x
    x = 324,331,750.08/20,755.08
  6. Step 6: Final answer
    x = 15,626.62

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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.