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Finding the Fourth Proportional to 11,745, 16,206.62 and 6,438.42

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Solution

The fourth proportional to 11,745, 16,206.62 and 6,438.42 is: 8,884.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,745 : 16,206.62 = 6,438.42 : x
  2. Step 2: Convert to fraction form
    11,745/16,206.62 = 6,438.42/x
  3. Step 3: Cross multiply
    11,745x = 16,206.62 × 6,438.42
  4. Step 4: Simplify right side
    11,745x = 104,344,994.15
  5. Step 5: Solve for x
    x = 104,344,994.15/11,745
  6. Step 6: Final answer
    x = 8,884.21

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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.