Home / 21,144.04-29,178.66-11,712.52

Finding the Fourth Proportional to 21,144.04, 29,178.66 and 11,712.52

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Solution

The fourth proportional to 21,144.04, 29,178.66 and 11,712.52 is: 16,163.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,144.04 : 29,178.66 = 11,712.52 : x
  2. Step 2: Convert to fraction form
    21,144.04/29,178.66 = 11,712.52/x
  3. Step 3: Cross multiply
    21,144.04x = 29,178.66 × 11,712.52
  4. Step 4: Simplify right side
    21,144.04x = 341,755,638.82
  5. Step 5: Solve for x
    x = 341,755,638.82/21,144.04
  6. Step 6: Final answer
    x = 16,163.21

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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.