Home / 18,707.28-25,821-11,629.68

Finding the Fourth Proportional to 18,707.28, 25,821 and 11,629.68

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Solution

The fourth proportional to 18,707.28, 25,821 and 11,629.68 is: 16,052.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,707.28 : 25,821 = 11,629.68 : x
  2. Step 2: Convert to fraction form
    18,707.28/25,821 = 11,629.68/x
  3. Step 3: Cross multiply
    18,707.28x = 25,821 × 11,629.68
  4. Step 4: Simplify right side
    18,707.28x = 300,289,967.28
  5. Step 5: Solve for x
    x = 300,289,967.28/18,707.28
  6. Step 6: Final answer
    x = 16,052.04

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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.