Home / 12,142.68-18,214.80-3,823

Finding the Fourth Proportional to 12,142.68, 18,214.80 and 3,823

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Solution

The fourth proportional to 12,142.68, 18,214.80 and 3,823 is: 5,734.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,142.68 : 18,214.80 = 3,823 : x
  2. Step 2: Convert to fraction form
    12,142.68/18,214.80 = 3,823/x
  3. Step 3: Cross multiply
    12,142.68x = 18,214.80 × 3,823
  4. Step 4: Simplify right side
    12,142.68x = 69,635,180.40
  5. Step 5: Solve for x
    x = 69,635,180.40/12,142.68
  6. Step 6: Final answer
    x = 5,734.75

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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.