Home / 43,286.90-64,931.97-12,121.34

Finding the Fourth Proportional to 43,286.90, 64,931.97 and 12,121.34

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Solution

The fourth proportional to 43,286.90, 64,931.97 and 12,121.34 is: 18,182.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,286.90 : 64,931.97 = 12,121.34 : x
  2. Step 2: Convert to fraction form
    43,286.90/64,931.97 = 12,121.34/x
  3. Step 3: Cross multiply
    43,286.90x = 64,931.97 × 12,121.34
  4. Step 4: Simplify right side
    43,286.90x = 787,062,485.24
  5. Step 5: Solve for x
    x = 787,062,485.24/43,286.90
  6. Step 6: Final answer
    x = 18,182.46

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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.