Home / 13,877.72-20,816.70-5,558.44

Finding the Fourth Proportional to 13,877.72, 20,816.70 and 5,558.44

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Solution

The fourth proportional to 13,877.72, 20,816.70 and 5,558.44 is: 8,337.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,877.72 : 20,816.70 = 5,558.44 : x
  2. Step 2: Convert to fraction form
    13,877.72/20,816.70 = 5,558.44/x
  3. Step 3: Cross multiply
    13,877.72x = 20,816.70 × 5,558.44
  4. Step 4: Simplify right side
    13,877.72x = 115,708,377.95
  5. Step 5: Solve for x
    x = 115,708,377.95/13,877.72
  6. Step 6: Final answer
    x = 8,337.71

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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.