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Finding the Fourth Proportional to 34,840.64, 48,069.78 and 20,694.80

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Solution

The fourth proportional to 34,840.64, 48,069.78 and 20,694.80 is: 28,552.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,840.64 : 48,069.78 = 20,694.80 : x
  2. Step 2: Convert to fraction form
    34,840.64/48,069.78 = 20,694.80/x
  3. Step 3: Cross multiply
    34,840.64x = 48,069.78 × 20,694.80
  4. Step 4: Simplify right side
    34,840.64x = 994,794,483.14
  5. Step 5: Solve for x
    x = 994,794,483.14/34,840.64
  6. Step 6: Final answer
    x = 28,552.70

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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.