Home / 20,582.82-28,404.81-12,629.43

Finding the Fourth Proportional to 20,582.82, 28,404.81 and 12,629.43

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Solution

The fourth proportional to 20,582.82, 28,404.81 and 12,629.43 is: 17,428.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,582.82 : 28,404.81 = 12,629.43 : x
  2. Step 2: Convert to fraction form
    20,582.82/28,404.81 = 12,629.43/x
  3. Step 3: Cross multiply
    20,582.82x = 28,404.81 × 12,629.43
  4. Step 4: Simplify right side
    20,582.82x = 358,736,559.56
  5. Step 5: Solve for x
    x = 358,736,559.56/20,582.82
  6. Step 6: Final answer
    x = 17,428.93

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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.