Home / 16,921.91-25,333.66-12,558.85

Finding the Fourth Proportional to 16,921.91, 25,333.66 and 12,558.85

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Solution

The fourth proportional to 16,921.91, 25,333.66 and 12,558.85 is: 18,801.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,921.91 : 25,333.66 = 12,558.85 : x
  2. Step 2: Convert to fraction form
    16,921.91/25,333.66 = 12,558.85/x
  3. Step 3: Cross multiply
    16,921.91x = 25,333.66 × 12,558.85
  4. Step 4: Simplify right side
    16,921.91x = 318,161,588.26
  5. Step 5: Solve for x
    x = 318,161,588.26/16,921.91
  6. Step 6: Final answer
    x = 18,801.75

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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.