Home / 18,218.40-27,312.60-8,223.80

Finding the Fourth Proportional to 18,218.40, 27,312.60 and 8,223.80

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Solution

The fourth proportional to 18,218.40, 27,312.60 and 8,223.80 is: 12,328.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,218.40 : 27,312.60 = 8,223.80 : x
  2. Step 2: Convert to fraction form
    18,218.40/27,312.60 = 8,223.80/x
  3. Step 3: Cross multiply
    18,218.40x = 27,312.60 × 8,223.80
  4. Step 4: Simplify right side
    18,218.40x = 224,613,359.88
  5. Step 5: Solve for x
    x = 224,613,359.88/18,218.40
  6. Step 6: Final answer
    x = 12,328.93

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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.