Home / 11,905.50-17,858.10-2,899.66

Finding the Fourth Proportional to 11,905.50, 17,858.10 and 2,899.66

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Solution

The fourth proportional to 11,905.50, 17,858.10 and 2,899.66 is: 4,349.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,905.50 : 17,858.10 = 2,899.66 : x
  2. Step 2: Convert to fraction form
    11,905.50/17,858.10 = 2,899.66/x
  3. Step 3: Cross multiply
    11,905.50x = 17,858.10 × 2,899.66
  4. Step 4: Simplify right side
    11,905.50x = 51,782,418.25
  5. Step 5: Solve for x
    x = 51,782,418.25/11,905.50
  6. Step 6: Final answer
    x = 4,349.45

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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.