Home / 18,369.20-25,340.82-12,402.80

Finding the Fourth Proportional to 18,369.20, 25,340.82 and 12,402.80

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Solution

The fourth proportional to 18,369.20, 25,340.82 and 12,402.80 is: 17,110.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,369.20 : 25,340.82 = 12,402.80 : x
  2. Step 2: Convert to fraction form
    18,369.20/25,340.82 = 12,402.80/x
  3. Step 3: Cross multiply
    18,369.20x = 25,340.82 × 12,402.80
  4. Step 4: Simplify right side
    18,369.20x = 314,297,122.30
  5. Step 5: Solve for x
    x = 314,297,122.30/18,369.20
  6. Step 6: Final answer
    x = 17,110.01

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Half scale
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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.