Home / 20,879.32-31,262.94-16,331.28

Finding the Fourth Proportional to 20,879.32, 31,262.94 and 16,331.28

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Solution

The fourth proportional to 20,879.32, 31,262.94 and 16,331.28 is: 24,453.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,879.32 : 31,262.94 = 16,331.28 : x
  2. Step 2: Convert to fraction form
    20,879.32/31,262.94 = 16,331.28/x
  3. Step 3: Cross multiply
    20,879.32x = 31,262.94 × 16,331.28
  4. Step 4: Simplify right side
    20,879.32x = 510,563,826.76
  5. Step 5: Solve for x
    x = 510,563,826.76/20,879.32
  6. Step 6: Final answer
    x = 24,453.09

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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.