Home / 30,658.14-45,990.18-11,939.73

Finding the Fourth Proportional to 30,658.14, 45,990.18 and 11,939.73

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Solution

The fourth proportional to 30,658.14, 45,990.18 and 11,939.73 is: 17,910.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,658.14 : 45,990.18 = 11,939.73 : x
  2. Step 2: Convert to fraction form
    30,658.14/45,990.18 = 11,939.73/x
  3. Step 3: Cross multiply
    30,658.14x = 45,990.18 × 11,939.73
  4. Step 4: Simplify right side
    30,658.14x = 549,110,331.85
  5. Step 5: Solve for x
    x = 549,110,331.85/30,658.14
  6. Step 6: Final answer
    x = 17,910.75

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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.