Home / 12,664.76-18,948.92-7,648.66

Finding the Fourth Proportional to 12,664.76, 18,948.92 and 7,648.66

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Solution

The fourth proportional to 12,664.76, 18,948.92 and 7,648.66 is: 11,443.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,664.76 : 18,948.92 = 7,648.66 : x
  2. Step 2: Convert to fraction form
    12,664.76/18,948.92 = 7,648.66/x
  3. Step 3: Cross multiply
    12,664.76x = 18,948.92 × 7,648.66
  4. Step 4: Simplify right side
    12,664.76x = 144,933,846.45
  5. Step 5: Solve for x
    x = 144,933,846.45/12,664.76
  6. Step 6: Final answer
    x = 11,443.87

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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.