Home / 12,809.30-19,212.51-3,450.01

Finding the Fourth Proportional to 12,809.30, 19,212.51 and 3,450.01

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Solution

The fourth proportional to 12,809.30, 19,212.51 and 3,450.01 is: 5,174.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,809.30 : 19,212.51 = 3,450.01 : x
  2. Step 2: Convert to fraction form
    12,809.30/19,212.51 = 3,450.01/x
  3. Step 3: Cross multiply
    12,809.30x = 19,212.51 × 3,450.01
  4. Step 4: Simplify right side
    12,809.30x = 66,283,306.83
  5. Step 5: Solve for x
    x = 66,283,306.83/12,809.30
  6. Step 6: Final answer
    x = 5,174.62

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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.