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Finding the Fourth Proportional to 18,235.80, 27,353.70 and 10,439.12

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Solution

The fourth proportional to 18,235.80, 27,353.70 and 10,439.12 is: 15,658.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,235.80 : 27,353.70 = 10,439.12 : x
  2. Step 2: Convert to fraction form
    18,235.80/27,353.70 = 10,439.12/x
  3. Step 3: Cross multiply
    18,235.80x = 27,353.70 × 10,439.12
  4. Step 4: Simplify right side
    18,235.80x = 285,548,556.74
  5. Step 5: Solve for x
    x = 285,548,556.74/18,235.80
  6. Step 6: Final answer
    x = 15,658.68

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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.