Home / 12,809.90-19,213.09-3,450.35

Finding the Fourth Proportional to 12,809.90, 19,213.09 and 3,450.35

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Solution

The fourth proportional to 12,809.90, 19,213.09 and 3,450.35 is: 5,175.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,809.90 : 19,213.09 = 3,450.35 : x
  2. Step 2: Convert to fraction form
    12,809.90/19,213.09 = 3,450.35/x
  3. Step 3: Cross multiply
    12,809.90x = 19,213.09 × 3,450.35
  4. Step 4: Simplify right side
    12,809.90x = 66,291,885.08
  5. Step 5: Solve for x
    x = 66,291,885.08/12,809.90
  6. Step 6: Final answer
    x = 5,175.05

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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.