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Finding the Fourth Proportional to 34,403.64, 47,473.96 and 20,978.96

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Solution

The fourth proportional to 34,403.64, 47,473.96 and 20,978.96 is: 28,949.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,403.64 : 47,473.96 = 20,978.96 : x
  2. Step 2: Convert to fraction form
    34,403.64/47,473.96 = 20,978.96/x
  3. Step 3: Cross multiply
    34,403.64x = 47,473.96 × 20,978.96
  4. Step 4: Simplify right side
    34,403.64x = 995,954,307.88
  5. Step 5: Solve for x
    x = 995,954,307.88/34,403.64
  6. Step 6: Final answer
    x = 28,949.10

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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.