Home / 18,310.86-25,225.83-15,103.26

Finding the Fourth Proportional to 18,310.86, 25,225.83 and 15,103.26

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Solution

The fourth proportional to 18,310.86, 25,225.83 and 15,103.26 is: 20,806.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,310.86 : 25,225.83 = 15,103.26 : x
  2. Step 2: Convert to fraction form
    18,310.86/25,225.83 = 15,103.26/x
  3. Step 3: Cross multiply
    18,310.86x = 25,225.83 × 15,103.26
  4. Step 4: Simplify right side
    18,310.86x = 380,992,269.21
  5. Step 5: Solve for x
    x = 380,992,269.21/18,310.86
  6. Step 6: Final answer
    x = 20,806.90

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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.