Home / 18,088.58-27,129.20-4,939.86

Finding the Fourth Proportional to 18,088.58, 27,129.20 and 4,939.86

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Solution

The fourth proportional to 18,088.58, 27,129.20 and 4,939.86 is: 7,408.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,088.58 : 27,129.20 = 4,939.86 : x
  2. Step 2: Convert to fraction form
    18,088.58/27,129.20 = 4,939.86/x
  3. Step 3: Cross multiply
    18,088.58x = 27,129.20 × 4,939.86
  4. Step 4: Simplify right side
    18,088.58x = 134,014,449.91
  5. Step 5: Solve for x
    x = 134,014,449.91/18,088.58
  6. Step 6: Final answer
    x = 7,408.79

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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.