Home / 19,136.40-28,722.77-11,755.28

Finding the Fourth Proportional to 19,136.40, 28,722.77 and 11,755.28

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Solution

The fourth proportional to 19,136.40, 28,722.77 and 11,755.28 is: 17,644.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,136.40 : 28,722.77 = 11,755.28 : x
  2. Step 2: Convert to fraction form
    19,136.40/28,722.77 = 11,755.28/x
  3. Step 3: Cross multiply
    19,136.40x = 28,722.77 × 11,755.28
  4. Step 4: Simplify right side
    19,136.40x = 337,644,001.34
  5. Step 5: Solve for x
    x = 337,644,001.34/19,136.40
  6. Step 6: Final answer
    x = 17,644.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.