Home / 12,762.28-19,147.26-3,998.12

Finding the Fourth Proportional to 12,762.28, 19,147.26 and 3,998.12

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Solution

The fourth proportional to 12,762.28, 19,147.26 and 3,998.12 is: 5,998.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,762.28 : 19,147.26 = 3,998.12 : x
  2. Step 2: Convert to fraction form
    12,762.28/19,147.26 = 3,998.12/x
  3. Step 3: Cross multiply
    12,762.28x = 19,147.26 × 3,998.12
  4. Step 4: Simplify right side
    12,762.28x = 76,553,043.15
  5. Step 5: Solve for x
    x = 76,553,043.15/12,762.28
  6. Step 6: Final answer
    x = 5,998.38

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Half scale
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Double scale
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Similar ratio
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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.