Home / 20,622.39-28,458.72-11,669.82

Finding the Fourth Proportional to 20,622.39, 28,458.72 and 11,669.82

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Solution

The fourth proportional to 20,622.39, 28,458.72 and 11,669.82 is: 16,104.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,622.39 : 28,458.72 = 11,669.82 : x
  2. Step 2: Convert to fraction form
    20,622.39/28,458.72 = 11,669.82/x
  3. Step 3: Cross multiply
    20,622.39x = 28,458.72 × 11,669.82
  4. Step 4: Simplify right side
    20,622.39x = 332,108,139.83
  5. Step 5: Solve for x
    x = 332,108,139.83/20,622.39
  6. Step 6: Final answer
    x = 16,104.25

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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.