Home / 21,493.79-29,661.54-11,933.82

Finding the Fourth Proportional to 21,493.79, 29,661.54 and 11,933.82

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Solution

The fourth proportional to 21,493.79, 29,661.54 and 11,933.82 is: 16,468.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,493.79 : 29,661.54 = 11,933.82 : x
  2. Step 2: Convert to fraction form
    21,493.79/29,661.54 = 11,933.82/x
  3. Step 3: Cross multiply
    21,493.79x = 29,661.54 × 11,933.82
  4. Step 4: Simplify right side
    21,493.79x = 353,975,479.28
  5. Step 5: Solve for x
    x = 353,975,479.28/21,493.79
  6. Step 6: Final answer
    x = 16,468.74

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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.