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Finding the Fourth Proportional to 28,662.46, 39,553.64 and 15,914.98

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Solution

The fourth proportional to 28,662.46, 39,553.64 and 15,914.98 is: 21,962.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,662.46 : 39,553.64 = 15,914.98 : x
  2. Step 2: Convert to fraction form
    28,662.46/39,553.64 = 15,914.98/x
  3. Step 3: Cross multiply
    28,662.46x = 39,553.64 × 15,914.98
  4. Step 4: Simplify right side
    28,662.46x = 629,495,309.95
  5. Step 5: Solve for x
    x = 629,495,309.95/28,662.46
  6. Step 6: Final answer
    x = 21,962.36

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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.