Home / 20,249.35-30,364.50-6,918.78

Finding the Fourth Proportional to 20,249.35, 30,364.50 and 6,918.78

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Solution

The fourth proportional to 20,249.35, 30,364.50 and 6,918.78 is: 10,374.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,249.35 : 30,364.50 = 6,918.78 : x
  2. Step 2: Convert to fraction form
    20,249.35/30,364.50 = 6,918.78/x
  3. Step 3: Cross multiply
    20,249.35x = 30,364.50 × 6,918.78
  4. Step 4: Simplify right side
    20,249.35x = 210,085,295.31
  5. Step 5: Solve for x
    x = 210,085,295.31/20,249.35
  6. Step 6: Final answer
    x = 10,374.92

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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.