Home / 18,219.95-27,318.22-7,687.09

Finding the Fourth Proportional to 18,219.95, 27,318.22 and 7,687.09

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Solution

The fourth proportional to 18,219.95, 27,318.22 and 7,687.09 is: 11,525.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,219.95 : 27,318.22 = 7,687.09 : x
  2. Step 2: Convert to fraction form
    18,219.95/27,318.22 = 7,687.09/x
  3. Step 3: Cross multiply
    18,219.95x = 27,318.22 × 7,687.09
  4. Step 4: Simplify right side
    18,219.95x = 209,997,646.34
  5. Step 5: Solve for x
    x = 209,997,646.34/18,219.95
  6. Step 6: Final answer
    x = 11,525.70

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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.