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Finding the Fourth Proportional to 34,674.57, 47,858.31 and 21,919.68

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Solution

The fourth proportional to 34,674.57, 47,858.31 and 21,919.68 is: 30,253.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,674.57 : 47,858.31 = 21,919.68 : x
  2. Step 2: Convert to fraction form
    34,674.57/47,858.31 = 21,919.68/x
  3. Step 3: Cross multiply
    34,674.57x = 47,858.31 × 21,919.68
  4. Step 4: Simplify right side
    34,674.57x = 1,049,038,840.54
  5. Step 5: Solve for x
    x = 1,049,038,840.54/34,674.57
  6. Step 6: Final answer
    x = 30,253.84

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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.