Home / 20,357.80-28,093.43-11,405.24

Finding the Fourth Proportional to 20,357.80, 28,093.43 and 11,405.24

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Solution

The fourth proportional to 20,357.80, 28,093.43 and 11,405.24 is: 15,739.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,357.80 : 28,093.43 = 11,405.24 : x
  2. Step 2: Convert to fraction form
    20,357.80/28,093.43 = 11,405.24/x
  3. Step 3: Cross multiply
    20,357.80x = 28,093.43 × 11,405.24
  4. Step 4: Simplify right side
    20,357.80x = 320,412,304.97
  5. Step 5: Solve for x
    x = 320,412,304.97/20,357.80
  6. Step 6: Final answer
    x = 15,739.05

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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.