Home / 12,654.70-18,982.35-3,889.69

Finding the Fourth Proportional to 12,654.70, 18,982.35 and 3,889.69

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Solution

The fourth proportional to 12,654.70, 18,982.35 and 3,889.69 is: 5,834.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,654.70 : 18,982.35 = 3,889.69 : x
  2. Step 2: Convert to fraction form
    12,654.70/18,982.35 = 3,889.69/x
  3. Step 3: Cross multiply
    12,654.70x = 18,982.35 × 3,889.69
  4. Step 4: Simplify right side
    12,654.70x = 73,835,409.52
  5. Step 5: Solve for x
    x = 73,835,409.52/12,654.70
  6. Step 6: Final answer
    x = 5,834.62

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1.5x scale

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.