Home / 13,459.86-20,187.39-4,097.61

Finding the Fourth Proportional to 13,459.86, 20,187.39 and 4,097.61

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Solution

The fourth proportional to 13,459.86, 20,187.39 and 4,097.61 is: 6,145.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,459.86 : 20,187.39 = 4,097.61 : x
  2. Step 2: Convert to fraction form
    13,459.86/20,187.39 = 4,097.61/x
  3. Step 3: Cross multiply
    13,459.86x = 20,187.39 × 4,097.61
  4. Step 4: Simplify right side
    13,459.86x = 82,720,051.14
  5. Step 5: Solve for x
    x = 82,720,051.14/13,459.86
  6. Step 6: Final answer
    x = 6,145.68

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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.