Home / 21,208.88-29,269.14-11,777.38

Finding the Fourth Proportional to 21,208.88, 29,269.14 and 11,777.38

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Solution

The fourth proportional to 21,208.88, 29,269.14 and 11,777.38 is: 16,253.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,208.88 : 29,269.14 = 11,777.38 : x
  2. Step 2: Convert to fraction form
    21,208.88/29,269.14 = 11,777.38/x
  3. Step 3: Cross multiply
    21,208.88x = 29,269.14 × 11,777.38
  4. Step 4: Simplify right side
    21,208.88x = 344,713,784.05
  5. Step 5: Solve for x
    x = 344,713,784.05/21,208.88
  6. Step 6: Final answer
    x = 16,253.28

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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.