Home / 30,145.37-45,217.37-7,960.31

Finding the Fourth Proportional to 30,145.37, 45,217.37 and 7,960.31

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Solution

The fourth proportional to 30,145.37, 45,217.37 and 7,960.31 is: 11,940.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,145.37 : 45,217.37 = 7,960.31 : x
  2. Step 2: Convert to fraction form
    30,145.37/45,217.37 = 7,960.31/x
  3. Step 3: Cross multiply
    30,145.37x = 45,217.37 × 7,960.31
  4. Step 4: Simplify right side
    30,145.37x = 359,944,076.40
  5. Step 5: Solve for x
    x = 359,944,076.40/30,145.37
  6. Step 6: Final answer
    x = 11,940.28

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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.