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Finding the Fourth Proportional to 14,186.80, 21,241.80 and 11,114.80

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Solution

The fourth proportional to 14,186.80, 21,241.80 and 11,114.80 is: 16,642.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,186.80 : 21,241.80 = 11,114.80 : x
  2. Step 2: Convert to fraction form
    14,186.80/21,241.80 = 11,114.80/x
  3. Step 3: Cross multiply
    14,186.80x = 21,241.80 × 11,114.80
  4. Step 4: Simplify right side
    14,186.80x = 236,098,358.64
  5. Step 5: Solve for x
    x = 236,098,358.64/14,186.80
  6. Step 6: Final answer
    x = 16,642.12

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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.