Home / 20,321.06-28,042.41-11,368.37

Finding the Fourth Proportional to 20,321.06, 28,042.41 and 11,368.37

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Solution

The fourth proportional to 20,321.06, 28,042.41 and 11,368.37 is: 15,687.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,321.06 : 28,042.41 = 11,368.37 : x
  2. Step 2: Convert to fraction form
    20,321.06/28,042.41 = 11,368.37/x
  3. Step 3: Cross multiply
    20,321.06x = 28,042.41 × 11,368.37
  4. Step 4: Simplify right side
    20,321.06x = 318,796,494.47
  5. Step 5: Solve for x
    x = 318,796,494.47/20,321.06
  6. Step 6: Final answer
    x = 15,687.98

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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.