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Finding the Fourth Proportional to 18,139.67, 27,204.34 and 7,043.99

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Solution

The fourth proportional to 18,139.67, 27,204.34 and 7,043.99 is: 10,563.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,139.67 : 27,204.34 = 7,043.99 : x
  2. Step 2: Convert to fraction form
    18,139.67/27,204.34 = 7,043.99/x
  3. Step 3: Cross multiply
    18,139.67x = 27,204.34 × 7,043.99
  4. Step 4: Simplify right side
    18,139.67x = 191,627,098.92
  5. Step 5: Solve for x
    x = 191,627,098.92/18,139.67
  6. Step 6: Final answer
    x = 10,563.98

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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.