Home / 18,455.20-27,683.28-6,765.28

Finding the Fourth Proportional to 18,455.20, 27,683.28 and 6,765.28

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Solution

The fourth proportional to 18,455.20, 27,683.28 and 6,765.28 is: 10,148.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,455.20 : 27,683.28 = 6,765.28 : x
  2. Step 2: Convert to fraction form
    18,455.20/27,683.28 = 6,765.28/x
  3. Step 3: Cross multiply
    18,455.20x = 27,683.28 × 6,765.28
  4. Step 4: Simplify right side
    18,455.20x = 187,285,140.52
  5. Step 5: Solve for x
    x = 187,285,140.52/18,455.20
  6. Step 6: Final answer
    x = 10,148.10

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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.