Home / 20,458.02-28,229.77-11,505.33

Finding the Fourth Proportional to 20,458.02, 28,229.77 and 11,505.33

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Solution

The fourth proportional to 20,458.02, 28,229.77 and 11,505.33 is: 15,876.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,458.02 : 28,229.77 = 11,505.33 : x
  2. Step 2: Convert to fraction form
    20,458.02/28,229.77 = 11,505.33/x
  3. Step 3: Cross multiply
    20,458.02x = 28,229.77 × 11,505.33
  4. Step 4: Simplify right side
    20,458.02x = 324,792,945.81
  5. Step 5: Solve for x
    x = 324,792,945.81/20,458.02
  6. Step 6: Final answer
    x = 15,876.07

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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.