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Finding the Fourth Proportional to 12,483.96, 18,725.43 and 8,506.81

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Solution

The fourth proportional to 12,483.96, 18,725.43 and 8,506.81 is: 12,759.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,483.96 : 18,725.43 = 8,506.81 : x
  2. Step 2: Convert to fraction form
    12,483.96/18,725.43 = 8,506.81/x
  3. Step 3: Cross multiply
    12,483.96x = 18,725.43 × 8,506.81
  4. Step 4: Simplify right side
    12,483.96x = 159,293,577.30
  5. Step 5: Solve for x
    x = 159,293,577.30/12,483.96
  6. Step 6: Final answer
    x = 12,759.86

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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.