Home / 36,319.36-50,120.88-20,409.28

Finding the Fourth Proportional to 36,319.36, 50,120.88 and 20,409.28

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Solution

The fourth proportional to 36,319.36, 50,120.88 and 20,409.28 is: 28,164.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,319.36 : 50,120.88 = 20,409.28 : x
  2. Step 2: Convert to fraction form
    36,319.36/50,120.88 = 20,409.28/x
  3. Step 3: Cross multiply
    36,319.36x = 50,120.88 × 20,409.28
  4. Step 4: Simplify right side
    36,319.36x = 1,022,931,073.77
  5. Step 5: Solve for x
    x = 1,022,931,073.77/36,319.36
  6. Step 6: Final answer
    x = 28,164.90

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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.