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Finding the Fourth Proportional to 36,801.70, 50,787.90 and 20,887.63

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Solution

The fourth proportional to 36,801.70, 50,787.90 and 20,887.63 is: 28,825.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,801.70 : 50,787.90 = 20,887.63 : x
  2. Step 2: Convert to fraction form
    36,801.70/50,787.90 = 20,887.63/x
  3. Step 3: Cross multiply
    36,801.70x = 50,787.90 × 20,887.63
  4. Step 4: Simplify right side
    36,801.70x = 1,060,838,736.71
  5. Step 5: Solve for x
    x = 1,060,838,736.71/36,801.70
  6. Step 6: Final answer
    x = 28,825.81

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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.