Home / 18,965.42-28,439.04-8,961.84

Finding the Fourth Proportional to 18,965.42, 28,439.04 and 8,961.84

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Solution

The fourth proportional to 18,965.42, 28,439.04 and 8,961.84 is: 13,438.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,965.42 : 28,439.04 = 8,961.84 : x
  2. Step 2: Convert to fraction form
    18,965.42/28,439.04 = 8,961.84/x
  3. Step 3: Cross multiply
    18,965.42x = 28,439.04 × 8,961.84
  4. Step 4: Simplify right side
    18,965.42x = 254,866,153.54
  5. Step 5: Solve for x
    x = 254,866,153.54/18,965.42
  6. Step 6: Final answer
    x = 13,438.47

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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.