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Finding the Fourth Proportional to 35,379.42, 48,820.64 and 20,841.30

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Solution

The fourth proportional to 35,379.42, 48,820.64 and 20,841.30 is: 28,759.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,379.42 : 48,820.64 = 20,841.30 : x
  2. Step 2: Convert to fraction form
    35,379.42/48,820.64 = 20,841.30/x
  3. Step 3: Cross multiply
    35,379.42x = 48,820.64 × 20,841.30
  4. Step 4: Simplify right side
    35,379.42x = 1,017,485,604.43
  5. Step 5: Solve for x
    x = 1,017,485,604.43/35,379.42
  6. Step 6: Final answer
    x = 28,759.25

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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.