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Finding the Fourth Proportional to 13,677.45, 18,881.18 and 8,011.41

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Solution

The fourth proportional to 13,677.45, 18,881.18 and 8,011.41 is: 11,059.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,677.45 : 18,881.18 = 8,011.41 : x
  2. Step 2: Convert to fraction form
    13,677.45/18,881.18 = 8,011.41/x
  3. Step 3: Cross multiply
    13,677.45x = 18,881.18 × 8,011.41
  4. Step 4: Simplify right side
    13,677.45x = 151,264,834.21
  5. Step 5: Solve for x
    x = 151,264,834.21/13,677.45
  6. Step 6: Final answer
    x = 11,059.43

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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.