Home / 30,906.35-46,311.81-20,871.77

Finding the Fourth Proportional to 30,906.35, 46,311.81 and 20,871.77

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Solution

The fourth proportional to 30,906.35, 46,311.81 and 20,871.77 is: 31,275.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,906.35 : 46,311.81 = 20,871.77 : x
  2. Step 2: Convert to fraction form
    30,906.35/46,311.81 = 20,871.77/x
  3. Step 3: Cross multiply
    30,906.35x = 46,311.81 × 20,871.77
  4. Step 4: Simplify right side
    30,906.35x = 966,609,446.60
  5. Step 5: Solve for x
    x = 966,609,446.60/30,906.35
  6. Step 6: Final answer
    x = 31,275.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.