Home / 21,406.77-29,540.54-11,975.33

Finding the Fourth Proportional to 21,406.77, 29,540.54 and 11,975.33

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Solution

The fourth proportional to 21,406.77, 29,540.54 and 11,975.33 is: 16,525.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,406.77 : 29,540.54 = 11,975.33 : x
  2. Step 2: Convert to fraction form
    21,406.77/29,540.54 = 11,975.33/x
  3. Step 3: Cross multiply
    21,406.77x = 29,540.54 × 11,975.33
  4. Step 4: Simplify right side
    21,406.77x = 353,757,507.30
  5. Step 5: Solve for x
    x = 353,757,507.30/21,406.77
  6. Step 6: Final answer
    x = 16,525.50

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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.