Home / 39,355.21-54,310.33-21,450.36

Finding the Fourth Proportional to 39,355.21, 54,310.33 and 21,450.36

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Solution

The fourth proportional to 39,355.21, 54,310.33 and 21,450.36 is: 29,601.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,355.21 : 54,310.33 = 21,450.36 : x
  2. Step 2: Convert to fraction form
    39,355.21/54,310.33 = 21,450.36/x
  3. Step 3: Cross multiply
    39,355.21x = 54,310.33 × 21,450.36
  4. Step 4: Simplify right side
    39,355.21x = 1,164,976,130.22
  5. Step 5: Solve for x
    x = 1,164,976,130.22/39,355.21
  6. Step 6: Final answer
    x = 29,601.57

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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.