Home / 20,245.90-30,356.70-10,404.40

Finding the Fourth Proportional to 20,245.90, 30,356.70 and 10,404.40

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Solution

The fourth proportional to 20,245.90, 30,356.70 and 10,404.40 is: 15,600.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,245.90 : 30,356.70 = 10,404.40 : x
  2. Step 2: Convert to fraction form
    20,245.90/30,356.70 = 10,404.40/x
  3. Step 3: Cross multiply
    20,245.90x = 30,356.70 × 10,404.40
  4. Step 4: Simplify right side
    20,245.90x = 315,843,249.48
  5. Step 5: Solve for x
    x = 315,843,249.48/20,245.90
  6. Step 6: Final answer
    x = 15,600.36

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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.