Home / 20,868.22-28,798.26-11,308.26

Finding the Fourth Proportional to 20,868.22, 28,798.26 and 11,308.26

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Solution

The fourth proportional to 20,868.22, 28,798.26 and 11,308.26 is: 15,605.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,868.22 : 28,798.26 = 11,308.26 : x
  2. Step 2: Convert to fraction form
    20,868.22/28,798.26 = 11,308.26/x
  3. Step 3: Cross multiply
    20,868.22x = 28,798.26 × 11,308.26
  4. Step 4: Simplify right side
    20,868.22x = 325,658,067.64
  5. Step 5: Solve for x
    x = 325,658,067.64/20,868.22
  6. Step 6: Final answer
    x = 15,605.45

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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.