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Finding the Fourth Proportional to 12,169.92, 18,256.96 and 4,379.52

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Solution

The fourth proportional to 12,169.92, 18,256.96 and 4,379.52 is: 6,570.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,169.92 : 18,256.96 = 4,379.52 : x
  2. Step 2: Convert to fraction form
    12,169.92/18,256.96 = 4,379.52/x
  3. Step 3: Cross multiply
    12,169.92x = 18,256.96 × 4,379.52
  4. Step 4: Simplify right side
    12,169.92x = 79,956,721.46
  5. Step 5: Solve for x
    x = 79,956,721.46/12,169.92
  6. Step 6: Final answer
    x = 6,570.03

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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.