Home / 20,800.91-28,705.19-11,848.38

Finding the Fourth Proportional to 20,800.91, 28,705.19 and 11,848.38

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Solution

The fourth proportional to 20,800.91, 28,705.19 and 11,848.38 is: 16,350.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,800.91 : 28,705.19 = 11,848.38 : x
  2. Step 2: Convert to fraction form
    20,800.91/28,705.19 = 11,848.38/x
  3. Step 3: Cross multiply
    20,800.91x = 28,705.19 × 11,848.38
  4. Step 4: Simplify right side
    20,800.91x = 340,109,939.85
  5. Step 5: Solve for x
    x = 340,109,939.85/20,800.91
  6. Step 6: Final answer
    x = 16,350.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.