Home / 20,499.54-30,730.11-11,125.80

Finding the Fourth Proportional to 20,499.54, 30,730.11 and 11,125.80

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Solution

The fourth proportional to 20,499.54, 30,730.11 and 11,125.80 is: 16,678.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,499.54 : 30,730.11 = 11,125.80 : x
  2. Step 2: Convert to fraction form
    20,499.54/30,730.11 = 11,125.80/x
  3. Step 3: Cross multiply
    20,499.54x = 30,730.11 × 11,125.80
  4. Step 4: Simplify right side
    20,499.54x = 341,897,057.84
  5. Step 5: Solve for x
    x = 341,897,057.84/20,499.54
  6. Step 6: Final answer
    x = 16,678.28

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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.