Home / 20,826.05-28,729.22-14,109.39

Finding the Fourth Proportional to 20,826.05, 28,729.22 and 14,109.39

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Solution

The fourth proportional to 20,826.05, 28,729.22 and 14,109.39 is: 19,463.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,826.05 : 28,729.22 = 14,109.39 : x
  2. Step 2: Convert to fraction form
    20,826.05/28,729.22 = 14,109.39/x
  3. Step 3: Cross multiply
    20,826.05x = 28,729.22 × 14,109.39
  4. Step 4: Simplify right side
    20,826.05x = 405,351,698.83
  5. Step 5: Solve for x
    x = 405,351,698.83/20,826.05
  6. Step 6: Final answer
    x = 19,463.69

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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.