Home / 21,144.40-29,178.01-11,582.37

Finding the Fourth Proportional to 21,144.40, 29,178.01 and 11,582.37

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Solution

The fourth proportional to 21,144.40, 29,178.01 and 11,582.37 is: 15,982.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,144.40 : 29,178.01 = 11,582.37 : x
  2. Step 2: Convert to fraction form
    21,144.40/29,178.01 = 11,582.37/x
  3. Step 3: Cross multiply
    21,144.40x = 29,178.01 × 11,582.37
  4. Step 4: Simplify right side
    21,144.40x = 337,950,636.80
  5. Step 5: Solve for x
    x = 337,950,636.80/21,144.40
  6. Step 6: Final answer
    x = 15,982.99

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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.