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Finding the Fourth Proportional to 36,887.68, 50,915.84 and 20,980.96

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Solution

The fourth proportional to 36,887.68, 50,915.84 and 20,980.96 is: 28,959.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,887.68 : 50,915.84 = 20,980.96 : x
  2. Step 2: Convert to fraction form
    36,887.68/50,915.84 = 20,980.96/x
  3. Step 3: Cross multiply
    36,887.68x = 50,915.84 × 20,980.96
  4. Step 4: Simplify right side
    36,887.68x = 1,068,263,202.41
  5. Step 5: Solve for x
    x = 1,068,263,202.41/36,887.68
  6. Step 6: Final answer
    x = 28,959.89

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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.