Home / 18,126.20-27,187.98-4,977.44

Finding the Fourth Proportional to 18,126.20, 27,187.98 and 4,977.44

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Solution

The fourth proportional to 18,126.20, 27,187.98 and 4,977.44 is: 7,465.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,126.20 : 27,187.98 = 4,977.44 : x
  2. Step 2: Convert to fraction form
    18,126.20/27,187.98 = 4,977.44/x
  3. Step 3: Cross multiply
    18,126.20x = 27,187.98 × 4,977.44
  4. Step 4: Simplify right side
    18,126.20x = 135,326,539.17
  5. Step 5: Solve for x
    x = 135,326,539.17/18,126.20
  6. Step 6: Final answer
    x = 7,465.80

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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.