Home / 20,357.42-28,092.89-11,405.03

Finding the Fourth Proportional to 20,357.42, 28,092.89 and 11,405.03

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Solution

The fourth proportional to 20,357.42, 28,092.89 and 11,405.03 is: 15,738.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,357.42 : 28,092.89 = 11,405.03 : x
  2. Step 2: Convert to fraction form
    20,357.42/28,092.89 = 11,405.03/x
  3. Step 3: Cross multiply
    20,357.42x = 28,092.89 × 11,405.03
  4. Step 4: Simplify right side
    20,357.42x = 320,400,055.75
  5. Step 5: Solve for x
    x = 320,400,055.75/20,357.42
  6. Step 6: Final answer
    x = 15,738.74

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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.