Home / 12,772.23-19,145.39-8,090.79

Finding the Fourth Proportional to 12,772.23, 19,145.39 and 8,090.79

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Solution

The fourth proportional to 12,772.23, 19,145.39 and 8,090.79 is: 12,127.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,772.23 : 19,145.39 = 8,090.79 : x
  2. Step 2: Convert to fraction form
    12,772.23/19,145.39 = 8,090.79/x
  3. Step 3: Cross multiply
    12,772.23x = 19,145.39 × 8,090.79
  4. Step 4: Simplify right side
    12,772.23x = 154,901,289.50
  5. Step 5: Solve for x
    x = 154,901,289.50/12,772.23
  6. Step 6: Final answer
    x = 12,127.98

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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.