Home / 12,302.20-18,453.30-8,615.80

Finding the Fourth Proportional to 12,302.20, 18,453.30 and 8,615.80

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Solution

The fourth proportional to 12,302.20, 18,453.30 and 8,615.80 is: 12,923.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,302.20 : 18,453.30 = 8,615.80 : x
  2. Step 2: Convert to fraction form
    12,302.20/18,453.30 = 8,615.80/x
  3. Step 3: Cross multiply
    12,302.20x = 18,453.30 × 8,615.80
  4. Step 4: Simplify right side
    12,302.20x = 158,989,942.14
  5. Step 5: Solve for x
    x = 158,989,942.14/12,302.20
  6. Step 6: Final answer
    x = 12,923.70

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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.