Home / 30,112.88-45,171.84-10,391.60

Finding the Fourth Proportional to 30,112.88, 45,171.84 and 10,391.60

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Solution

The fourth proportional to 30,112.88, 45,171.84 and 10,391.60 is: 15,588.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,112.88 : 45,171.84 = 10,391.60 : x
  2. Step 2: Convert to fraction form
    30,112.88/45,171.84 = 10,391.60/x
  3. Step 3: Cross multiply
    30,112.88x = 45,171.84 × 10,391.60
  4. Step 4: Simplify right side
    30,112.88x = 469,407,692.54
  5. Step 5: Solve for x
    x = 469,407,692.54/30,112.88
  6. Step 6: Final answer
    x = 15,588.27

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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.