Home / 12,415.31-18,622.97-3,650.30

Finding the Fourth Proportional to 12,415.31, 18,622.97 and 3,650.30

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Solution

The fourth proportional to 12,415.31, 18,622.97 and 3,650.30 is: 5,475.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,415.31 : 18,622.97 = 3,650.30 : x
  2. Step 2: Convert to fraction form
    12,415.31/18,622.97 = 3,650.30/x
  3. Step 3: Cross multiply
    12,415.31x = 18,622.97 × 3,650.30
  4. Step 4: Simplify right side
    12,415.31x = 67,979,409.14
  5. Step 5: Solve for x
    x = 67,979,409.14/12,415.31
  6. Step 6: Final answer
    x = 5,475.45

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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.