Home / 20,601.92-30,881.67-8,116.89

Finding the Fourth Proportional to 20,601.92, 30,881.67 and 8,116.89

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Solution

The fourth proportional to 20,601.92, 30,881.67 and 8,116.89 is: 12,166.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,601.92 : 30,881.67 = 8,116.89 : x
  2. Step 2: Convert to fraction form
    20,601.92/30,881.67 = 8,116.89/x
  3. Step 3: Cross multiply
    20,601.92x = 30,881.67 × 8,116.89
  4. Step 4: Simplify right side
    20,601.92x = 250,663,118.41
  5. Step 5: Solve for x
    x = 250,663,118.41/20,601.92
  6. Step 6: Final answer
    x = 12,166.98

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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.