Home / 21,355.75-31,993.53-19,744.66

Finding the Fourth Proportional to 21,355.75, 31,993.53 and 19,744.66

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Solution

The fourth proportional to 21,355.75, 31,993.53 and 19,744.66 is: 29,579.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,355.75 : 31,993.53 = 19,744.66 : x
  2. Step 2: Convert to fraction form
    21,355.75/31,993.53 = 19,744.66/x
  3. Step 3: Cross multiply
    21,355.75x = 31,993.53 × 19,744.66
  4. Step 4: Simplify right side
    21,355.75x = 631,701,372.05
  5. Step 5: Solve for x
    x = 631,701,372.05/21,355.75
  6. Step 6: Final answer
    x = 29,579.92

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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.