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Finding the Fourth Proportional to 18,553.97, 27,798.55 and 15,453.90

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Solution

The fourth proportional to 18,553.97, 27,798.55 and 15,453.90 is: 23,153.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,553.97 : 27,798.55 = 15,453.90 : x
  2. Step 2: Convert to fraction form
    18,553.97/27,798.55 = 15,453.90/x
  3. Step 3: Cross multiply
    18,553.97x = 27,798.55 × 15,453.90
  4. Step 4: Simplify right side
    18,553.97x = 429,596,011.85
  5. Step 5: Solve for x
    x = 429,596,011.85/18,553.97
  6. Step 6: Final answer
    x = 23,153.86

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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.