Home / 20,583.77-28,383.05-13,400.44

Finding the Fourth Proportional to 20,583.77, 28,383.05 and 13,400.44

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Solution

The fourth proportional to 20,583.77, 28,383.05 and 13,400.44 is: 18,477.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,583.77 : 28,383.05 = 13,400.44 : x
  2. Step 2: Convert to fraction form
    20,583.77/28,383.05 = 13,400.44/x
  3. Step 3: Cross multiply
    20,583.77x = 28,383.05 × 13,400.44
  4. Step 4: Simplify right side
    20,583.77x = 380,345,321.09
  5. Step 5: Solve for x
    x = 380,345,321.09/20,583.77
  6. Step 6: Final answer
    x = 18,477.93

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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.