Home / 12,636.23-18,956.77-3,871.22

Finding the Fourth Proportional to 12,636.23, 18,956.77 and 3,871.22

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Solution

The fourth proportional to 12,636.23, 18,956.77 and 3,871.22 is: 5,807.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,636.23 : 18,956.77 = 3,871.22 : x
  2. Step 2: Convert to fraction form
    12,636.23/18,956.77 = 3,871.22/x
  3. Step 3: Cross multiply
    12,636.23x = 18,956.77 × 3,871.22
  4. Step 4: Simplify right side
    12,636.23x = 73,385,722.70
  5. Step 5: Solve for x
    x = 73,385,722.70/12,636.23
  6. Step 6: Final answer
    x = 5,807.57

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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.