Home / 20,796.80-28,699.16-11,365.43

Finding the Fourth Proportional to 20,796.80, 28,699.16 and 11,365.43

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Solution

The fourth proportional to 20,796.80, 28,699.16 and 11,365.43 is: 15,684.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,796.80 : 28,699.16 = 11,365.43 : x
  2. Step 2: Convert to fraction form
    20,796.80/28,699.16 = 11,365.43/x
  3. Step 3: Cross multiply
    20,796.80x = 28,699.16 × 11,365.43
  4. Step 4: Simplify right side
    20,796.80x = 326,178,093.72
  5. Step 5: Solve for x
    x = 326,178,093.72/20,796.80
  6. Step 6: Final answer
    x = 15,684.06

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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.