Home / 20,768.73-31,085.33-15,810.99

Finding the Fourth Proportional to 20,768.73, 31,085.33 and 15,810.99

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Solution

The fourth proportional to 20,768.73, 31,085.33 and 15,810.99 is: 23,664.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,768.73 : 31,085.33 = 15,810.99 : x
  2. Step 2: Convert to fraction form
    20,768.73/31,085.33 = 15,810.99/x
  3. Step 3: Cross multiply
    20,768.73x = 31,085.33 × 15,810.99
  4. Step 4: Simplify right side
    20,768.73x = 491,489,762.72
  5. Step 5: Solve for x
    x = 491,489,762.72/20,768.73
  6. Step 6: Final answer
    x = 23,664.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.