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Finding the Fourth Proportional to 34,967.80, 48,255.78 and 20,821.24

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Solution

The fourth proportional to 34,967.80, 48,255.78 and 20,821.24 is: 28,733.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,967.80 : 48,255.78 = 20,821.24 : x
  2. Step 2: Convert to fraction form
    34,967.80/48,255.78 = 20,821.24/x
  3. Step 3: Cross multiply
    34,967.80x = 48,255.78 × 20,821.24
  4. Step 4: Simplify right side
    34,967.80x = 1,004,745,176.77
  5. Step 5: Solve for x
    x = 1,004,745,176.77/34,967.80
  6. Step 6: Final answer
    x = 28,733.44

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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.