Home / 28,676.04-39,577.25-20,636.32

Finding the Fourth Proportional to 28,676.04, 39,577.25 and 20,636.32

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Solution

The fourth proportional to 28,676.04, 39,577.25 and 20,636.32 is: 28,481.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,676.04 : 39,577.25 = 20,636.32 : x
  2. Step 2: Convert to fraction form
    28,676.04/39,577.25 = 20,636.32/x
  3. Step 3: Cross multiply
    28,676.04x = 39,577.25 × 20,636.32
  4. Step 4: Simplify right side
    28,676.04x = 816,728,597.83
  5. Step 5: Solve for x
    x = 816,728,597.83/28,676.04
  6. Step 6: Final answer
    x = 28,481.22

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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.