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Finding the Fourth Proportional to 36,403.40, 50,235.72 and 20,491.22

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Solution

The fourth proportional to 36,403.40, 50,235.72 and 20,491.22 is: 28,277.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,403.40 : 50,235.72 = 20,491.22 : x
  2. Step 2: Convert to fraction form
    36,403.40/50,235.72 = 20,491.22/x
  3. Step 3: Cross multiply
    36,403.40x = 50,235.72 × 20,491.22
  4. Step 4: Simplify right side
    36,403.40x = 1,029,391,190.38
  5. Step 5: Solve for x
    x = 1,029,391,190.38/36,403.40
  6. Step 6: Final answer
    x = 28,277.34

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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.