Home / 12,636.25-18,958.56-3,871.24

Finding the Fourth Proportional to 12,636.25, 18,958.56 and 3,871.24

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Solution

The fourth proportional to 12,636.25, 18,958.56 and 3,871.24 is: 5,808.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,636.25 : 18,958.56 = 3,871.24 : x
  2. Step 2: Convert to fraction form
    12,636.25/18,958.56 = 3,871.24/x
  3. Step 3: Cross multiply
    12,636.25x = 18,958.56 × 3,871.24
  4. Step 4: Simplify right side
    12,636.25x = 73,393,135.81
  5. Step 5: Solve for x
    x = 73,393,135.81/12,636.25
  6. Step 6: Final answer
    x = 5,808.14

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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.