Home / 18,688.92-25,789.66-11,615.28

Finding the Fourth Proportional to 18,688.92, 25,789.66 and 11,615.28

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Solution

The fourth proportional to 18,688.92, 25,789.66 and 11,615.28 is: 16,028.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,688.92 : 25,789.66 = 11,615.28 : x
  2. Step 2: Convert to fraction form
    18,688.92/25,789.66 = 11,615.28/x
  3. Step 3: Cross multiply
    18,688.92x = 25,789.66 × 11,615.28
  4. Step 4: Simplify right side
    18,688.92x = 299,554,122.00
  5. Step 5: Solve for x
    x = 299,554,122.00/18,688.92
  6. Step 6: Final answer
    x = 16,028.43

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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.