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Finding the Fourth Proportional to 11,986.58, 17,948.44 and 8,457.54

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Solution

The fourth proportional to 11,986.58, 17,948.44 and 8,457.54 is: 12,664.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,986.58 : 17,948.44 = 8,457.54 : x
  2. Step 2: Convert to fraction form
    11,986.58/17,948.44 = 8,457.54/x
  3. Step 3: Cross multiply
    11,986.58x = 17,948.44 × 8,457.54
  4. Step 4: Simplify right side
    11,986.58x = 151,799,595.41
  5. Step 5: Solve for x
    x = 151,799,595.41/11,986.58
  6. Step 6: Final answer
    x = 12,664.13

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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.