Home / 36,336.87-50,142.96-20,420.28

Finding the Fourth Proportional to 36,336.87, 50,142.96 and 20,420.28

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Solution

The fourth proportional to 36,336.87, 50,142.96 and 20,420.28 is: 28,178.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,336.87 : 50,142.96 = 20,420.28 : x
  2. Step 2: Convert to fraction form
    36,336.87/50,142.96 = 20,420.28/x
  3. Step 3: Cross multiply
    36,336.87x = 50,142.96 × 20,420.28
  4. Step 4: Simplify right side
    36,336.87x = 1,023,933,283.23
  5. Step 5: Solve for x
    x = 1,023,933,283.23/36,336.87
  6. Step 6: Final answer
    x = 28,178.91

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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.