Home / 18,728.56-28,098.06-5,581.36

Finding the Fourth Proportional to 18,728.56, 28,098.06 and 5,581.36

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Solution

The fourth proportional to 18,728.56, 28,098.06 and 5,581.36 is: 8,373.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,728.56 : 28,098.06 = 5,581.36 : x
  2. Step 2: Convert to fraction form
    18,728.56/28,098.06 = 5,581.36/x
  3. Step 3: Cross multiply
    18,728.56x = 28,098.06 × 5,581.36
  4. Step 4: Simplify right side
    18,728.56x = 156,825,388.16
  5. Step 5: Solve for x
    x = 156,825,388.16/18,728.56
  6. Step 6: Final answer
    x = 8,373.60

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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.