Home / 18,791.75-25,925.46-12,421.37

Finding the Fourth Proportional to 18,791.75, 25,925.46 and 12,421.37

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Solution

The fourth proportional to 18,791.75, 25,925.46 and 12,421.37 is: 17,136.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,791.75 : 25,925.46 = 12,421.37 : x
  2. Step 2: Convert to fraction form
    18,791.75/25,925.46 = 12,421.37/x
  3. Step 3: Cross multiply
    18,791.75x = 25,925.46 × 12,421.37
  4. Step 4: Simplify right side
    18,791.75x = 322,029,731.08
  5. Step 5: Solve for x
    x = 322,029,731.08/18,791.75
  6. Step 6: Final answer
    x = 17,136.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.