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Finding the Fourth Proportional to 34,894.64, 48,138.72 and 20,739.44

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Solution

The fourth proportional to 34,894.64, 48,138.72 and 20,739.44 is: 28,610.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,894.64 : 48,138.72 = 20,739.44 : x
  2. Step 2: Convert to fraction form
    34,894.64/48,138.72 = 20,739.44/x
  3. Step 3: Cross multiply
    34,894.64x = 48,138.72 × 20,739.44
  4. Step 4: Simplify right side
    34,894.64x = 998,370,095.12
  5. Step 5: Solve for x
    x = 998,370,095.12/34,894.64
  6. Step 6: Final answer
    x = 28,610.99

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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.