Home / 21,107.66-29,132.49-13,563.42

Finding the Fourth Proportional to 21,107.66, 29,132.49 and 13,563.42

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Solution

The fourth proportional to 21,107.66, 29,132.49 and 13,563.42 is: 18,720.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,107.66 : 29,132.49 = 13,563.42 : x
  2. Step 2: Convert to fraction form
    21,107.66/29,132.49 = 13,563.42/x
  3. Step 3: Cross multiply
    21,107.66x = 29,132.49 × 13,563.42
  4. Step 4: Simplify right side
    21,107.66x = 395,136,270.50
  5. Step 5: Solve for x
    x = 395,136,270.50/21,107.66
  6. Step 6: Final answer
    x = 18,720.04

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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.