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Finding the Fourth Proportional to 13,755.70, 20,636.76 and 10,955.14

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Solution

The fourth proportional to 13,755.70, 20,636.76 and 10,955.14 is: 16,435.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,755.70 : 20,636.76 = 10,955.14 : x
  2. Step 2: Convert to fraction form
    13,755.70/20,636.76 = 10,955.14/x
  3. Step 3: Cross multiply
    13,755.70x = 20,636.76 × 10,955.14
  4. Step 4: Simplify right side
    13,755.70x = 226,078,594.95
  5. Step 5: Solve for x
    x = 226,078,594.95/13,755.70
  6. Step 6: Final answer
    x = 16,435.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.