Home / 12,489.48-18,727.89-4,166.52

Finding the Fourth Proportional to 12,489.48, 18,727.89 and 4,166.52

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Solution

The fourth proportional to 12,489.48, 18,727.89 and 4,166.52 is: 6,247.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,489.48 : 18,727.89 = 4,166.52 : x
  2. Step 2: Convert to fraction form
    12,489.48/18,727.89 = 4,166.52/x
  3. Step 3: Cross multiply
    12,489.48x = 18,727.89 × 4,166.52
  4. Step 4: Simplify right side
    12,489.48x = 78,030,128.24
  5. Step 5: Solve for x
    x = 78,030,128.24/12,489.48
  6. Step 6: Final answer
    x = 6,247.67

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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.