Home / 28,911.40-39,897.26-16,163.88

Finding the Fourth Proportional to 28,911.40, 39,897.26 and 16,163.88

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Solution

The fourth proportional to 28,911.40, 39,897.26 and 16,163.88 is: 22,305.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,911.40 : 39,897.26 = 16,163.88 : x
  2. Step 2: Convert to fraction form
    28,911.40/39,897.26 = 16,163.88/x
  3. Step 3: Cross multiply
    28,911.40x = 39,897.26 × 16,163.88
  4. Step 4: Simplify right side
    28,911.40x = 644,894,522.97
  5. Step 5: Solve for x
    x = 644,894,522.97/28,911.40
  6. Step 6: Final answer
    x = 22,305.89

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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.