Home / 20,674.98-28,532.07-12,721.86

Finding the Fourth Proportional to 20,674.98, 28,532.07 and 12,721.86

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Solution

The fourth proportional to 20,674.98, 28,532.07 and 12,721.86 is: 17,556.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,674.98 : 28,532.07 = 12,721.86 : x
  2. Step 2: Convert to fraction form
    20,674.98/28,532.07 = 12,721.86/x
  3. Step 3: Cross multiply
    20,674.98x = 28,532.07 × 12,721.86
  4. Step 4: Simplify right side
    20,674.98x = 362,981,000.05
  5. Step 5: Solve for x
    x = 362,981,000.05/20,674.98
  6. Step 6: Final answer
    x = 17,556.53

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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.