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Finding the Fourth Proportional to 39,905.44, 59,858.16 and 12,203.44

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Solution

The fourth proportional to 39,905.44, 59,858.16 and 12,203.44 is: 18,305.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,905.44 : 59,858.16 = 12,203.44 : x
  2. Step 2: Convert to fraction form
    39,905.44/59,858.16 = 12,203.44/x
  3. Step 3: Cross multiply
    39,905.44x = 59,858.16 × 12,203.44
  4. Step 4: Simplify right side
    39,905.44x = 730,475,464.07
  5. Step 5: Solve for x
    x = 730,475,464.07/39,905.44
  6. Step 6: Final answer
    x = 18,305.16

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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.