Home / 18,319.12-27,480.42-4,992.28

Finding the Fourth Proportional to 18,319.12, 27,480.42 and 4,992.28

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Solution

The fourth proportional to 18,319.12, 27,480.42 and 4,992.28 is: 7,488.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,319.12 : 27,480.42 = 4,992.28 : x
  2. Step 2: Convert to fraction form
    18,319.12/27,480.42 = 4,992.28/x
  3. Step 3: Cross multiply
    18,319.12x = 27,480.42 × 4,992.28
  4. Step 4: Simplify right side
    18,319.12x = 137,189,951.16
  5. Step 5: Solve for x
    x = 137,189,951.16/18,319.12
  6. Step 6: Final answer
    x = 7,488.89

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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.