Home / 12,209.87-18,315.50-3,445.44

Finding the Fourth Proportional to 12,209.87, 18,315.50 and 3,445.44

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Solution

The fourth proportional to 12,209.87, 18,315.50 and 3,445.44 is: 5,168.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,209.87 : 18,315.50 = 3,445.44 : x
  2. Step 2: Convert to fraction form
    12,209.87/18,315.50 = 3,445.44/x
  3. Step 3: Cross multiply
    12,209.87x = 18,315.50 × 3,445.44
  4. Step 4: Simplify right side
    12,209.87x = 63,104,939.09
  5. Step 5: Solve for x
    x = 63,104,939.09/12,209.87
  6. Step 6: Final answer
    x = 5,168.36

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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.