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Finding the Fourth Proportional to 36,893.99, 50,913.47 and 20,978.44

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Solution

The fourth proportional to 36,893.99, 50,913.47 and 20,978.44 is: 28,950.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,893.99 : 50,913.47 = 20,978.44 : x
  2. Step 2: Convert to fraction form
    36,893.99/50,913.47 = 20,978.44/x
  3. Step 3: Cross multiply
    36,893.99x = 50,913.47 × 20,978.44
  4. Step 4: Simplify right side
    36,893.99x = 1,068,084,943.41
  5. Step 5: Solve for x
    x = 1,068,084,943.41/36,893.99
  6. Step 6: Final answer
    x = 28,950.11

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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.