Home / 18,975.39-28,453.67-6,491.88

Finding the Fourth Proportional to 18,975.39, 28,453.67 and 6,491.88

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Solution

The fourth proportional to 18,975.39, 28,453.67 and 6,491.88 is: 9,734.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,975.39 : 28,453.67 = 6,491.88 : x
  2. Step 2: Convert to fraction form
    18,975.39/28,453.67 = 6,491.88/x
  3. Step 3: Cross multiply
    18,975.39x = 28,453.67 × 6,491.88
  4. Step 4: Simplify right side
    18,975.39x = 184,717,811.20
  5. Step 5: Solve for x
    x = 184,717,811.20/18,975.39
  6. Step 6: Final answer
    x = 9,734.60

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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.