Home / 20,635.96-28,477.74-11,683.48

Finding the Fourth Proportional to 20,635.96, 28,477.74 and 11,683.48

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Solution

The fourth proportional to 20,635.96, 28,477.74 and 11,683.48 is: 16,123.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,635.96 : 28,477.74 = 11,683.48 : x
  2. Step 2: Convert to fraction form
    20,635.96/28,477.74 = 11,683.48/x
  3. Step 3: Cross multiply
    20,635.96x = 28,477.74 × 11,683.48
  4. Step 4: Simplify right side
    20,635.96x = 332,719,105.74
  5. Step 5: Solve for x
    x = 332,719,105.74/20,635.96
  6. Step 6: Final answer
    x = 16,123.27

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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.