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Finding the Fourth Proportional to 13,628.58, 18,814.05 and 8,600.10

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Solution

The fourth proportional to 13,628.58, 18,814.05 and 8,600.10 is: 11,872.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,628.58 : 18,814.05 = 8,600.10 : x
  2. Step 2: Convert to fraction form
    13,628.58/18,814.05 = 8,600.10/x
  3. Step 3: Cross multiply
    13,628.58x = 18,814.05 × 8,600.10
  4. Step 4: Simplify right side
    13,628.58x = 161,802,711.41
  5. Step 5: Solve for x
    x = 161,802,711.41/13,628.58
  6. Step 6: Final answer
    x = 11,872.31

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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.