Home / 20,255.35-30,382.89-10,899.77

Finding the Fourth Proportional to 20,255.35, 30,382.89 and 10,899.77

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Solution

The fourth proportional to 20,255.35, 30,382.89 and 10,899.77 is: 16,349.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,255.35 : 30,382.89 = 10,899.77 : x
  2. Step 2: Convert to fraction form
    20,255.35/30,382.89 = 10,899.77/x
  3. Step 3: Cross multiply
    20,255.35x = 30,382.89 × 10,899.77
  4. Step 4: Simplify right side
    20,255.35x = 331,166,512.94
  5. Step 5: Solve for x
    x = 331,166,512.94/20,255.35
  6. Step 6: Final answer
    x = 16,349.58

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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.