Home / 20,619.09-28,477.56-13,932.33

Finding the Fourth Proportional to 20,619.09, 28,477.56 and 13,932.33

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Solution

The fourth proportional to 20,619.09, 28,477.56 and 13,932.33 is: 19,242.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,619.09 : 28,477.56 = 13,932.33 : x
  2. Step 2: Convert to fraction form
    20,619.09/28,477.56 = 13,932.33/x
  3. Step 3: Cross multiply
    20,619.09x = 28,477.56 × 13,932.33
  4. Step 4: Simplify right side
    20,619.09x = 396,758,763.51
  5. Step 5: Solve for x
    x = 396,758,763.51/20,619.09
  6. Step 6: Final answer
    x = 19,242.30

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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.