Home / 12,909.40-19,331.70-9,604.60

Finding the Fourth Proportional to 12,909.40, 19,331.70 and 9,604.60

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Solution

The fourth proportional to 12,909.40, 19,331.70 and 9,604.60 is: 14,382.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,909.40 : 19,331.70 = 9,604.60 : x
  2. Step 2: Convert to fraction form
    12,909.40/19,331.70 = 9,604.60/x
  3. Step 3: Cross multiply
    12,909.40x = 19,331.70 × 9,604.60
  4. Step 4: Simplify right side
    12,909.40x = 185,673,245.82
  5. Step 5: Solve for x
    x = 185,673,245.82/12,909.40
  6. Step 6: Final answer
    x = 14,382.79

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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.