Home / 12,405.80-18,576.30-9,792.20

Finding the Fourth Proportional to 12,405.80, 18,576.30 and 9,792.20

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Solution

The fourth proportional to 12,405.80, 18,576.30 and 9,792.20 is: 14,662.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,405.80 : 18,576.30 = 9,792.20 : x
  2. Step 2: Convert to fraction form
    12,405.80/18,576.30 = 9,792.20/x
  3. Step 3: Cross multiply
    12,405.80x = 18,576.30 × 9,792.20
  4. Step 4: Simplify right side
    12,405.80x = 181,902,844.86
  5. Step 5: Solve for x
    x = 181,902,844.86/12,405.80
  6. Step 6: Final answer
    x = 14,662.73

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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.