Home / 11,122.41-16,688.25-4,879.20

Finding the Fourth Proportional to 11,122.41, 16,688.25 and 4,879.20

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Solution

The fourth proportional to 11,122.41, 16,688.25 and 4,879.20 is: 7,320.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,122.41 : 16,688.25 = 4,879.20 : x
  2. Step 2: Convert to fraction form
    11,122.41/16,688.25 = 4,879.20/x
  3. Step 3: Cross multiply
    11,122.41x = 16,688.25 × 4,879.20
  4. Step 4: Simplify right side
    11,122.41x = 81,425,309.40
  5. Step 5: Solve for x
    x = 81,425,309.40/11,122.41
  6. Step 6: Final answer
    x = 7,320.83

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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.