Home / 36,909.75-50,938.20-20,999.33

Finding the Fourth Proportional to 36,909.75, 50,938.20 and 20,999.33

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Solution

The fourth proportional to 36,909.75, 50,938.20 and 20,999.33 is: 28,980.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,909.75 : 50,938.20 = 20,999.33 : x
  2. Step 2: Convert to fraction form
    36,909.75/50,938.20 = 20,999.33/x
  3. Step 3: Cross multiply
    36,909.75x = 50,938.20 × 20,999.33
  4. Step 4: Simplify right side
    36,909.75x = 1,069,667,711.72
  5. Step 5: Solve for x
    x = 1,069,667,711.72/36,909.75
  6. Step 6: Final answer
    x = 28,980.63

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1.5x scale

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.