Home / 21,509.25-29,669.90-13,537.64

Finding the Fourth Proportional to 21,509.25, 29,669.90 and 13,537.64

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Solution

The fourth proportional to 21,509.25, 29,669.90 and 13,537.64 is: 18,673.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,509.25 : 29,669.90 = 13,537.64 : x
  2. Step 2: Convert to fraction form
    21,509.25/29,669.90 = 13,537.64/x
  3. Step 3: Cross multiply
    21,509.25x = 29,669.90 × 13,537.64
  4. Step 4: Simplify right side
    21,509.25x = 401,660,209.00
  5. Step 5: Solve for x
    x = 401,660,209.00/21,509.25
  6. Step 6: Final answer
    x = 18,673.84

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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.