Home / 13,789.56-20,683.98-4,429.56

Finding the Fourth Proportional to 13,789.56, 20,683.98 and 4,429.56

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Solution

The fourth proportional to 13,789.56, 20,683.98 and 4,429.56 is: 6,644.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,789.56 : 20,683.98 = 4,429.56 : x
  2. Step 2: Convert to fraction form
    13,789.56/20,683.98 = 4,429.56/x
  3. Step 3: Cross multiply
    13,789.56x = 20,683.98 × 4,429.56
  4. Step 4: Simplify right side
    13,789.56x = 91,620,930.45
  5. Step 5: Solve for x
    x = 91,620,930.45/13,789.56
  6. Step 6: Final answer
    x = 6,644.22

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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.