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Finding the Fourth Proportional to 27,991.04, 38,621.04 and 16,664

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Solution

The fourth proportional to 27,991.04, 38,621.04 and 16,664 is: 22,992.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,991.04 : 38,621.04 = 16,664 : x
  2. Step 2: Convert to fraction form
    27,991.04/38,621.04 = 16,664/x
  3. Step 3: Cross multiply
    27,991.04x = 38,621.04 × 16,664
  4. Step 4: Simplify right side
    27,991.04x = 643,581,010.56
  5. Step 5: Solve for x
    x = 643,581,010.56/27,991.04
  6. Step 6: Final answer
    x = 22,992.39

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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.