Home / 20,971.75-28,941.22-11,540.52

Finding the Fourth Proportional to 20,971.75, 28,941.22 and 11,540.52

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Solution

The fourth proportional to 20,971.75, 28,941.22 and 11,540.52 is: 15,926.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,971.75 : 28,941.22 = 11,540.52 : x
  2. Step 2: Convert to fraction form
    20,971.75/28,941.22 = 11,540.52/x
  3. Step 3: Cross multiply
    20,971.75x = 28,941.22 × 11,540.52
  4. Step 4: Simplify right side
    20,971.75x = 333,996,728.23
  5. Step 5: Solve for x
    x = 333,996,728.23/20,971.75
  6. Step 6: Final answer
    x = 15,926.03

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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.