Home / 12,427.28-18,641.48-4,107.80

Finding the Fourth Proportional to 12,427.28, 18,641.48 and 4,107.80

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Solution

The fourth proportional to 12,427.28, 18,641.48 and 4,107.80 is: 6,161.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,427.28 : 18,641.48 = 4,107.80 : x
  2. Step 2: Convert to fraction form
    12,427.28/18,641.48 = 4,107.80/x
  3. Step 3: Cross multiply
    12,427.28x = 18,641.48 × 4,107.80
  4. Step 4: Simplify right side
    12,427.28x = 76,575,471.54
  5. Step 5: Solve for x
    x = 76,575,471.54/12,427.28
  6. Step 6: Final answer
    x = 6,161.89

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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.