Home / 20,404.35-30,634.61-10,550.43

Finding the Fourth Proportional to 20,404.35, 30,634.61 and 10,550.43

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Solution

The fourth proportional to 20,404.35, 30,634.61 and 10,550.43 is: 15,840.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,404.35 : 30,634.61 = 10,550.43 : x
  2. Step 2: Convert to fraction form
    20,404.35/30,634.61 = 10,550.43/x
  3. Step 3: Cross multiply
    20,404.35x = 30,634.61 × 10,550.43
  4. Step 4: Simplify right side
    20,404.35x = 323,208,255.63
  5. Step 5: Solve for x
    x = 323,208,255.63/20,404.35
  6. Step 6: Final answer
    x = 15,840.16

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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.