Home / 20,622.34-28,458.43-11,669.68

Finding the Fourth Proportional to 20,622.34, 28,458.43 and 11,669.68

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Solution

The fourth proportional to 20,622.34, 28,458.43 and 11,669.68 is: 16,103.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,622.34 : 28,458.43 = 11,669.68 : x
  2. Step 2: Convert to fraction form
    20,622.34/28,458.43 = 11,669.68/x
  3. Step 3: Cross multiply
    20,622.34x = 28,458.43 × 11,669.68
  4. Step 4: Simplify right side
    20,622.34x = 332,100,771.40
  5. Step 5: Solve for x
    x = 332,100,771.40/20,622.34
  6. Step 6: Final answer
    x = 16,103.93

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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.