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Finding the Fourth Proportional to 34,719.90, 47,912.90 and 18,804.22

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Solution

The fourth proportional to 34,719.90, 47,912.90 and 18,804.22 is: 25,949.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,719.90 : 47,912.90 = 18,804.22 : x
  2. Step 2: Convert to fraction form
    34,719.90/47,912.90 = 18,804.22/x
  3. Step 3: Cross multiply
    34,719.90x = 47,912.90 × 18,804.22
  4. Step 4: Simplify right side
    34,719.90x = 900,964,712.44
  5. Step 5: Solve for x
    x = 900,964,712.44/34,719.90
  6. Step 6: Final answer
    x = 25,949.52

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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.