Home / 18,241.50-25,122.93-15,722.68

Finding the Fourth Proportional to 18,241.50, 25,122.93 and 15,722.68

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Solution

The fourth proportional to 18,241.50, 25,122.93 and 15,722.68 is: 21,653.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,241.50 : 25,122.93 = 15,722.68 : x
  2. Step 2: Convert to fraction form
    18,241.50/25,122.93 = 15,722.68/x
  3. Step 3: Cross multiply
    18,241.50x = 25,122.93 × 15,722.68
  4. Step 4: Simplify right side
    18,241.50x = 394,999,789.05
  5. Step 5: Solve for x
    x = 394,999,789.05/18,241.50
  6. Step 6: Final answer
    x = 21,653.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.