Home / 14,780.50-20,390.56-9,998.73

Finding the Fourth Proportional to 14,780.50, 20,390.56 and 9,998.73

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Solution

The fourth proportional to 14,780.50, 20,390.56 and 9,998.73 is: 13,793.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,780.50 : 20,390.56 = 9,998.73 : x
  2. Step 2: Convert to fraction form
    14,780.50/20,390.56 = 9,998.73/x
  3. Step 3: Cross multiply
    14,780.50x = 20,390.56 × 9,998.73
  4. Step 4: Simplify right side
    14,780.50x = 203,879,703.99
  5. Step 5: Solve for x
    x = 203,879,703.99/14,780.50
  6. Step 6: Final answer
    x = 13,793.83

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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.