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Finding the Fourth Proportional to 13,641.74, 18,814.11 and 8,604.62

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Solution

The fourth proportional to 13,641.74, 18,814.11 and 8,604.62 is: 11,867.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,641.74 : 18,814.11 = 8,604.62 : x
  2. Step 2: Convert to fraction form
    13,641.74/18,814.11 = 8,604.62/x
  3. Step 3: Cross multiply
    13,641.74x = 18,814.11 × 8,604.62
  4. Step 4: Simplify right side
    13,641.74x = 161,888,267.19
  5. Step 5: Solve for x
    x = 161,888,267.19/13,641.74
  6. Step 6: Final answer
    x = 11,867.13

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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.