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Finding the Fourth Proportional to 24,379.80, 33,646.86 and 20,393.88

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Solution

The fourth proportional to 24,379.80, 33,646.86 and 20,393.88 is: 28,145.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    24,379.80 : 33,646.86 = 20,393.88 : x
  2. Step 2: Convert to fraction form
    24,379.80/33,646.86 = 20,393.88/x
  3. Step 3: Cross multiply
    24,379.80x = 33,646.86 × 20,393.88
  4. Step 4: Simplify right side
    24,379.80x = 686,190,025.22
  5. Step 5: Solve for x
    x = 686,190,025.22/24,379.80
  6. Step 6: Final answer
    x = 28,145.84

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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.