Home / 20,215.24-30,324.30-5,423.80

Finding the Fourth Proportional to 20,215.24, 30,324.30 and 5,423.80

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Solution

The fourth proportional to 20,215.24, 30,324.30 and 5,423.80 is: 8,136.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,215.24 : 30,324.30 = 5,423.80 : x
  2. Step 2: Convert to fraction form
    20,215.24/30,324.30 = 5,423.80/x
  3. Step 3: Cross multiply
    20,215.24x = 30,324.30 × 5,423.80
  4. Step 4: Simplify right side
    20,215.24x = 164,472,938.34
  5. Step 5: Solve for x
    x = 164,472,938.34/20,215.24
  6. Step 6: Final answer
    x = 8,136.09

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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.