Home / 20,412.58-28,167.43-11,458.33

Finding the Fourth Proportional to 20,412.58, 28,167.43 and 11,458.33

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Solution

The fourth proportional to 20,412.58, 28,167.43 and 11,458.33 is: 15,811.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,412.58 : 28,167.43 = 11,458.33 : x
  2. Step 2: Convert to fraction form
    20,412.58/28,167.43 = 11,458.33/x
  3. Step 3: Cross multiply
    20,412.58x = 28,167.43 × 11,458.33
  4. Step 4: Simplify right side
    20,412.58x = 322,751,708.19
  5. Step 5: Solve for x
    x = 322,751,708.19/20,412.58
  6. Step 6: Final answer
    x = 15,811.41

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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.