Home / 16,865.38-25,311.84-11,939.80

Finding the Fourth Proportional to 16,865.38, 25,311.84 and 11,939.80

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Solution

The fourth proportional to 16,865.38, 25,311.84 and 11,939.80 is: 17,919.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,865.38 : 25,311.84 = 11,939.80 : x
  2. Step 2: Convert to fraction form
    16,865.38/25,311.84 = 11,939.80/x
  3. Step 3: Cross multiply
    16,865.38x = 25,311.84 × 11,939.80
  4. Step 4: Simplify right side
    16,865.38x = 302,218,307.23
  5. Step 5: Solve for x
    x = 302,218,307.23/16,865.38
  6. Step 6: Final answer
    x = 17,919.45

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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.