Home / 13,287.28-18,336.24-7,623.04

Finding the Fourth Proportional to 13,287.28, 18,336.24 and 7,623.04

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Solution

The fourth proportional to 13,287.28, 18,336.24 and 7,623.04 is: 10,519.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,287.28 : 18,336.24 = 7,623.04 : x
  2. Step 2: Convert to fraction form
    13,287.28/18,336.24 = 7,623.04/x
  3. Step 3: Cross multiply
    13,287.28x = 18,336.24 × 7,623.04
  4. Step 4: Simplify right side
    13,287.28x = 139,777,890.97
  5. Step 5: Solve for x
    x = 139,777,890.97/13,287.28
  6. Step 6: Final answer
    x = 10,519.68

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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.