Home / 20,984.82-31,496.67-10,603.86

Finding the Fourth Proportional to 20,984.82, 31,496.67 and 10,603.86

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Solution

The fourth proportional to 20,984.82, 31,496.67 and 10,603.86 is: 15,915.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,984.82 : 31,496.67 = 10,603.86 : x
  2. Step 2: Convert to fraction form
    20,984.82/31,496.67 = 10,603.86/x
  3. Step 3: Cross multiply
    20,984.82x = 31,496.67 × 10,603.86
  4. Step 4: Simplify right side
    20,984.82x = 333,986,279.15
  5. Step 5: Solve for x
    x = 333,986,279.15/20,984.82
  6. Step 6: Final answer
    x = 15,915.61

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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.