Home / 20,832.48-28,748.70-11,879.79

Finding the Fourth Proportional to 20,832.48, 28,748.70 and 11,879.79

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Solution

The fourth proportional to 20,832.48, 28,748.70 and 11,879.79 is: 16,394.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,832.48 : 28,748.70 = 11,879.79 : x
  2. Step 2: Convert to fraction form
    20,832.48/28,748.70 = 11,879.79/x
  3. Step 3: Cross multiply
    20,832.48x = 28,748.70 × 11,879.79
  4. Step 4: Simplify right side
    20,832.48x = 341,528,518.77
  5. Step 5: Solve for x
    x = 341,528,518.77/20,832.48
  6. Step 6: Final answer
    x = 16,394.04

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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.