Home / 20,408.20-30,628.68-10,550.35

Finding the Fourth Proportional to 20,408.20, 30,628.68 and 10,550.35

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Solution

The fourth proportional to 20,408.20, 30,628.68 and 10,550.35 is: 15,833.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,408.20 : 30,628.68 = 10,550.35 : x
  2. Step 2: Convert to fraction form
    20,408.20/30,628.68 = 10,550.35/x
  3. Step 3: Cross multiply
    20,408.20x = 30,628.68 × 10,550.35
  4. Step 4: Simplify right side
    20,408.20x = 323,143,294.04
  5. Step 5: Solve for x
    x = 323,143,294.04/20,408.20
  6. Step 6: Final answer
    x = 15,833.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.