Home / 18,686.09-25,772.21-11,972.34

Finding the Fourth Proportional to 18,686.09, 25,772.21 and 11,972.34

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Solution

The fourth proportional to 18,686.09, 25,772.21 and 11,972.34 is: 16,512.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,686.09 : 25,772.21 = 11,972.34 : x
  2. Step 2: Convert to fraction form
    18,686.09/25,772.21 = 11,972.34/x
  3. Step 3: Cross multiply
    18,686.09x = 25,772.21 × 11,972.34
  4. Step 4: Simplify right side
    18,686.09x = 308,553,660.67
  5. Step 5: Solve for x
    x = 308,553,660.67/18,686.09
  6. Step 6: Final answer
    x = 16,512.48

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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.