Home / 18,128.06-27,187.11-4,977.30

Finding the Fourth Proportional to 18,128.06, 27,187.11 and 4,977.30

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Solution

The fourth proportional to 18,128.06, 27,187.11 and 4,977.30 is: 7,464.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,128.06 : 27,187.11 = 4,977.30 : x
  2. Step 2: Convert to fraction form
    18,128.06/27,187.11 = 4,977.30/x
  3. Step 3: Cross multiply
    18,128.06x = 27,187.11 × 4,977.30
  4. Step 4: Simplify right side
    18,128.06x = 135,318,402.60
  5. Step 5: Solve for x
    x = 135,318,402.60/18,128.06
  6. Step 6: Final answer
    x = 7,464.58

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1.5x scale

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.