Home / 12,148.56-18,221.40-4,249.80

Finding the Fourth Proportional to 12,148.56, 18,221.40 and 4,249.80

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Solution

The fourth proportional to 12,148.56, 18,221.40 and 4,249.80 is: 6,374.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,148.56 : 18,221.40 = 4,249.80 : x
  2. Step 2: Convert to fraction form
    12,148.56/18,221.40 = 4,249.80/x
  3. Step 3: Cross multiply
    12,148.56x = 18,221.40 × 4,249.80
  4. Step 4: Simplify right side
    12,148.56x = 77,437,305.72
  5. Step 5: Solve for x
    x = 77,437,305.72/12,148.56
  6. Step 6: Final answer
    x = 6,374.20

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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.