Home / 20,636.07-28,478.43-11,683.41

Finding the Fourth Proportional to 20,636.07, 28,478.43 and 11,683.41

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Solution

The fourth proportional to 20,636.07, 28,478.43 and 11,683.41 is: 16,123.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,636.07 : 28,478.43 = 11,683.41 : x
  2. Step 2: Convert to fraction form
    20,636.07/28,478.43 = 11,683.41/x
  3. Step 3: Cross multiply
    20,636.07x = 28,478.43 × 11,683.41
  4. Step 4: Simplify right side
    20,636.07x = 332,725,173.85
  5. Step 5: Solve for x
    x = 332,725,173.85/20,636.07
  6. Step 6: Final answer
    x = 16,123.48

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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.