Home / 21,159.18-29,198.34-11,727

Finding the Fourth Proportional to 21,159.18, 29,198.34 and 11,727

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Solution

The fourth proportional to 21,159.18, 29,198.34 and 11,727 is: 16,182.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,159.18 : 29,198.34 = 11,727 : x
  2. Step 2: Convert to fraction form
    21,159.18/29,198.34 = 11,727/x
  3. Step 3: Cross multiply
    21,159.18x = 29,198.34 × 11,727
  4. Step 4: Simplify right side
    21,159.18x = 342,408,933.18
  5. Step 5: Solve for x
    x = 342,408,933.18/21,159.18
  6. Step 6: Final answer
    x = 16,182.52

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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.