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Finding the Fourth Proportional to 36,406.88, 50,238.72 and 20,488.32

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Solution

The fourth proportional to 36,406.88, 50,238.72 and 20,488.32 is: 28,272.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,406.88 : 50,238.72 = 20,488.32 : x
  2. Step 2: Convert to fraction form
    36,406.88/50,238.72 = 20,488.32/x
  3. Step 3: Cross multiply
    36,406.88x = 50,238.72 × 20,488.32
  4. Step 4: Simplify right side
    36,406.88x = 1,029,306,971.75
  5. Step 5: Solve for x
    x = 1,029,306,971.75/36,406.88
  6. Step 6: Final answer
    x = 28,272.32

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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.