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Finding the Fourth Proportional to 36,420.30, 50,262.93 and 20,503.80

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Solution

The fourth proportional to 36,420.30, 50,262.93 and 20,503.80 is: 28,296.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,420.30 : 50,262.93 = 20,503.80 : x
  2. Step 2: Convert to fraction form
    36,420.30/50,262.93 = 20,503.80/x
  3. Step 3: Cross multiply
    36,420.30x = 50,262.93 × 20,503.80
  4. Step 4: Simplify right side
    36,420.30x = 1,030,581,064.13
  5. Step 5: Solve for x
    x = 1,030,581,064.13/36,420.30
  6. Step 6: Final answer
    x = 28,296.89

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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.