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Finding the Fourth Proportional to 13,914.43, 20,871.71 and 4,053.76

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Solution

The fourth proportional to 13,914.43, 20,871.71 and 4,053.76 is: 6,080.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,914.43 : 20,871.71 = 4,053.76 : x
  2. Step 2: Convert to fraction form
    13,914.43/20,871.71 = 4,053.76/x
  3. Step 3: Cross multiply
    13,914.43x = 20,871.71 × 4,053.76
  4. Step 4: Simplify right side
    13,914.43x = 84,608,778.50
  5. Step 5: Solve for x
    x = 84,608,778.50/13,914.43
  6. Step 6: Final answer
    x = 6,080.65

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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.