Home / 18,022.80-27,029.92-4,875.28

Finding the Fourth Proportional to 18,022.80, 27,029.92 and 4,875.28

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Solution

The fourth proportional to 18,022.80, 27,029.92 and 4,875.28 is: 7,311.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,022.80 : 27,029.92 = 4,875.28 : x
  2. Step 2: Convert to fraction form
    18,022.80/27,029.92 = 4,875.28/x
  3. Step 3: Cross multiply
    18,022.80x = 27,029.92 × 4,875.28
  4. Step 4: Simplify right side
    18,022.80x = 131,778,428.38
  5. Step 5: Solve for x
    x = 131,778,428.38/18,022.80
  6. Step 6: Final answer
    x = 7,311.76

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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.