Home / 30,297.56-41,824.31-21,690.50

Finding the Fourth Proportional to 30,297.56, 41,824.31 and 21,690.50

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Solution

The fourth proportional to 30,297.56, 41,824.31 and 21,690.50 is: 29,942.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,297.56 : 41,824.31 = 21,690.50 : x
  2. Step 2: Convert to fraction form
    30,297.56/41,824.31 = 21,690.50/x
  3. Step 3: Cross multiply
    30,297.56x = 41,824.31 × 21,690.50
  4. Step 4: Simplify right side
    30,297.56x = 907,189,878.48
  5. Step 5: Solve for x
    x = 907,189,878.48/30,297.56
  6. Step 6: Final answer
    x = 29,942.68

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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.