Home / 18,121.38-27,150.60-9,807.12

Finding the Fourth Proportional to 18,121.38, 27,150.60 and 9,807.12

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Solution

The fourth proportional to 18,121.38, 27,150.60 and 9,807.12 is: 14,693.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,121.38 : 27,150.60 = 9,807.12 : x
  2. Step 2: Convert to fraction form
    18,121.38/27,150.60 = 9,807.12/x
  3. Step 3: Cross multiply
    18,121.38x = 27,150.60 × 9,807.12
  4. Step 4: Simplify right side
    18,121.38x = 266,269,192.27
  5. Step 5: Solve for x
    x = 266,269,192.27/18,121.38
  6. Step 6: Final answer
    x = 14,693.65

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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.