Home / 11,885.83-17,828.75-3,120.73

Finding the Fourth Proportional to 11,885.83, 17,828.75 and 3,120.73

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Solution

The fourth proportional to 11,885.83, 17,828.75 and 3,120.73 is: 4,681.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,885.83 : 17,828.75 = 3,120.73 : x
  2. Step 2: Convert to fraction form
    11,885.83/17,828.75 = 3,120.73/x
  3. Step 3: Cross multiply
    11,885.83x = 17,828.75 × 3,120.73
  4. Step 4: Simplify right side
    11,885.83x = 55,638,699.38
  5. Step 5: Solve for x
    x = 55,638,699.38/11,885.83
  6. Step 6: Final answer
    x = 4,681.10

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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.