Home / 12,636.47-18,958.35-3,872.68

Finding the Fourth Proportional to 12,636.47, 18,958.35 and 3,872.68

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Solution

The fourth proportional to 12,636.47, 18,958.35 and 3,872.68 is: 5,810.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,636.47 : 18,958.35 = 3,872.68 : x
  2. Step 2: Convert to fraction form
    12,636.47/18,958.35 = 3,872.68/x
  3. Step 3: Cross multiply
    12,636.47x = 18,958.35 × 3,872.68
  4. Step 4: Simplify right side
    12,636.47x = 73,419,590.00
  5. Step 5: Solve for x
    x = 73,419,590.00/12,636.47
  6. Step 6: Final answer
    x = 5,810.13

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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.