Home / 18,518.56-27,780.57-5,369.22

Finding the Fourth Proportional to 18,518.56, 27,780.57 and 5,369.22

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Solution

The fourth proportional to 18,518.56, 27,780.57 and 5,369.22 is: 8,054.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,518.56 : 27,780.57 = 5,369.22 : x
  2. Step 2: Convert to fraction form
    18,518.56/27,780.57 = 5,369.22/x
  3. Step 3: Cross multiply
    18,518.56x = 27,780.57 × 5,369.22
  4. Step 4: Simplify right side
    18,518.56x = 149,159,992.06
  5. Step 5: Solve for x
    x = 149,159,992.06/18,518.56
  6. Step 6: Final answer
    x = 8,054.62

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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.