Home / 20,897.82-28,838.46-11,699.22

Finding the Fourth Proportional to 20,897.82, 28,838.46 and 11,699.22

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Solution

The fourth proportional to 20,897.82, 28,838.46 and 11,699.22 is: 16,144.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,897.82 : 28,838.46 = 11,699.22 : x
  2. Step 2: Convert to fraction form
    20,897.82/28,838.46 = 11,699.22/x
  3. Step 3: Cross multiply
    20,897.82x = 28,838.46 × 11,699.22
  4. Step 4: Simplify right side
    20,897.82x = 337,387,488.00
  5. Step 5: Solve for x
    x = 337,387,488.00/20,897.82
  6. Step 6: Final answer
    x = 16,144.63

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1.5x scale

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.