Home / 12,115.76-16,732.44-8,348.72

Finding the Fourth Proportional to 12,115.76, 16,732.44 and 8,348.72

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Solution

The fourth proportional to 12,115.76, 16,732.44 and 8,348.72 is: 11,529.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,115.76 : 16,732.44 = 8,348.72 : x
  2. Step 2: Convert to fraction form
    12,115.76/16,732.44 = 8,348.72/x
  3. Step 3: Cross multiply
    12,115.76x = 16,732.44 × 8,348.72
  4. Step 4: Simplify right side
    12,115.76x = 139,694,456.48
  5. Step 5: Solve for x
    x = 139,694,456.48/12,115.76
  6. Step 6: Final answer
    x = 11,529.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.