Home / 12,672.58-19,010.31-3,909.70

Finding the Fourth Proportional to 12,672.58, 19,010.31 and 3,909.70

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Solution

The fourth proportional to 12,672.58, 19,010.31 and 3,909.70 is: 5,864.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,672.58 : 19,010.31 = 3,909.70 : x
  2. Step 2: Convert to fraction form
    12,672.58/19,010.31 = 3,909.70/x
  3. Step 3: Cross multiply
    12,672.58x = 19,010.31 × 3,909.70
  4. Step 4: Simplify right side
    12,672.58x = 74,324,609.01
  5. Step 5: Solve for x
    x = 74,324,609.01/12,672.58
  6. Step 6: Final answer
    x = 5,864.99

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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.