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Finding the Fourth Proportional to 36,897.27, 50,909.49 and 20,990.49

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Solution

The fourth proportional to 36,897.27, 50,909.49 and 20,990.49 is: 28,961.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,897.27 : 50,909.49 = 20,990.49 : x
  2. Step 2: Convert to fraction form
    36,897.27/50,909.49 = 20,990.49/x
  3. Step 3: Cross multiply
    36,897.27x = 50,909.49 × 20,990.49
  4. Step 4: Simplify right side
    36,897.27x = 1,068,615,177.17
  5. Step 5: Solve for x
    x = 1,068,615,177.17/36,897.27
  6. Step 6: Final answer
    x = 28,961.90

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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.