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Finding the Fourth Proportional to 23,379.91, 35,078.06 and 12,129.84

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Solution

The fourth proportional to 23,379.91, 35,078.06 and 12,129.84 is: 18,199.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,379.91 : 35,078.06 = 12,129.84 : x
  2. Step 2: Convert to fraction form
    23,379.91/35,078.06 = 12,129.84/x
  3. Step 3: Cross multiply
    23,379.91x = 35,078.06 × 12,129.84
  4. Step 4: Simplify right side
    23,379.91x = 425,491,285.64
  5. Step 5: Solve for x
    x = 425,491,285.64/23,379.91
  6. Step 6: Final answer
    x = 18,199.01

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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.