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Finding the Fourth Proportional to 36,893.75, 50,915.76 and 20,979.68

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Solution

The fourth proportional to 36,893.75, 50,915.76 and 20,979.68 is: 28,953.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,893.75 : 50,915.76 = 20,979.68 : x
  2. Step 2: Convert to fraction form
    36,893.75/50,915.76 = 20,979.68/x
  3. Step 3: Cross multiply
    36,893.75x = 50,915.76 × 20,979.68
  4. Step 4: Simplify right side
    36,893.75x = 1,068,196,351.76
  5. Step 5: Solve for x
    x = 1,068,196,351.76/36,893.75
  6. Step 6: Final answer
    x = 28,953.31

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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.