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Finding the Fourth Proportional to 18,373.40, 27,570.90 and 6,687.80

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Solution

The fourth proportional to 18,373.40, 27,570.90 and 6,687.80 is: 10,035.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,373.40 : 27,570.90 = 6,687.80 : x
  2. Step 2: Convert to fraction form
    18,373.40/27,570.90 = 6,687.80/x
  3. Step 3: Cross multiply
    18,373.40x = 27,570.90 × 6,687.80
  4. Step 4: Simplify right side
    18,373.40x = 184,388,665.02
  5. Step 5: Solve for x
    x = 184,388,665.02/18,373.40
  6. Step 6: Final answer
    x = 10,035.63

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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.