Home / 12,223.80-18,324.90-7,288.20

Finding the Fourth Proportional to 12,223.80, 18,324.90 and 7,288.20

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Solution

The fourth proportional to 12,223.80, 18,324.90 and 7,288.20 is: 10,925.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,223.80 : 18,324.90 = 7,288.20 : x
  2. Step 2: Convert to fraction form
    12,223.80/18,324.90 = 7,288.20/x
  3. Step 3: Cross multiply
    12,223.80x = 18,324.90 × 7,288.20
  4. Step 4: Simplify right side
    12,223.80x = 133,555,536.18
  5. Step 5: Solve for x
    x = 133,555,536.18/12,223.80
  6. Step 6: Final answer
    x = 10,925.86

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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.