Home / 18,743.28-28,116.75-5,416.59

Finding the Fourth Proportional to 18,743.28, 28,116.75 and 5,416.59

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Solution

The fourth proportional to 18,743.28, 28,116.75 and 5,416.59 is: 8,125.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,743.28 : 28,116.75 = 5,416.59 : x
  2. Step 2: Convert to fraction form
    18,743.28/28,116.75 = 5,416.59/x
  3. Step 3: Cross multiply
    18,743.28x = 28,116.75 × 5,416.59
  4. Step 4: Simplify right side
    18,743.28x = 152,296,906.88
  5. Step 5: Solve for x
    x = 152,296,906.88/18,743.28
  6. Step 6: Final answer
    x = 8,125.41

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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.