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Finding the Fourth Proportional to 36,897.39, 50,914.08 and 20,978.46

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Solution

The fourth proportional to 36,897.39, 50,914.08 and 20,978.46 is: 28,947.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,897.39 : 50,914.08 = 20,978.46 : x
  2. Step 2: Convert to fraction form
    36,897.39/50,914.08 = 20,978.46/x
  3. Step 3: Cross multiply
    36,897.39x = 50,914.08 × 20,978.46
  4. Step 4: Simplify right side
    36,897.39x = 1,068,098,990.72
  5. Step 5: Solve for x
    x = 1,068,098,990.72/36,897.39
  6. Step 6: Final answer
    x = 28,947.82

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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.