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Finding the Fourth Proportional to 20,253.35, 30,379.89 and 10,897.77

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Solution

The fourth proportional to 20,253.35, 30,379.89 and 10,897.77 is: 16,346.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,253.35 : 30,379.89 = 10,897.77 : x
  2. Step 2: Convert to fraction form
    20,253.35/30,379.89 = 10,897.77/x
  3. Step 3: Cross multiply
    20,253.35x = 30,379.89 × 10,897.77
  4. Step 4: Simplify right side
    20,253.35x = 331,073,116.69
  5. Step 5: Solve for x
    x = 331,073,116.69/20,253.35
  6. Step 6: Final answer
    x = 16,346.59

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1.5x scale

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.