Home / 12,309.80-18,468.74-4,910.18

Finding the Fourth Proportional to 12,309.80, 18,468.74 and 4,910.18

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Solution

The fourth proportional to 12,309.80, 18,468.74 and 4,910.18 is: 7,366.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,309.80 : 18,468.74 = 4,910.18 : x
  2. Step 2: Convert to fraction form
    12,309.80/18,468.74 = 4,910.18/x
  3. Step 3: Cross multiply
    12,309.80x = 18,468.74 × 4,910.18
  4. Step 4: Simplify right side
    12,309.80x = 90,684,757.70
  5. Step 5: Solve for x
    x = 90,684,757.70/12,309.80
  6. Step 6: Final answer
    x = 7,366.88

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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.