Home / 21,388.68-29,515.50-11,827.97

Finding the Fourth Proportional to 21,388.68, 29,515.50 and 11,827.97

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Solution

The fourth proportional to 21,388.68, 29,515.50 and 11,827.97 is: 16,322.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,388.68 : 29,515.50 = 11,827.97 : x
  2. Step 2: Convert to fraction form
    21,388.68/29,515.50 = 11,827.97/x
  3. Step 3: Cross multiply
    21,388.68x = 29,515.50 × 11,827.97
  4. Step 4: Simplify right side
    21,388.68x = 349,108,300.96
  5. Step 5: Solve for x
    x = 349,108,300.96/21,388.68
  6. Step 6: Final answer
    x = 16,322.11

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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.