Home / 20,908.20-28,852.32-11,476.56

Finding the Fourth Proportional to 20,908.20, 28,852.32 and 11,476.56

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Solution

The fourth proportional to 20,908.20, 28,852.32 and 11,476.56 is: 15,837.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,908.20 : 28,852.32 = 11,476.56 : x
  2. Step 2: Convert to fraction form
    20,908.20/28,852.32 = 11,476.56/x
  3. Step 3: Cross multiply
    20,908.20x = 28,852.32 × 11,476.56
  4. Step 4: Simplify right side
    20,908.20x = 331,125,381.62
  5. Step 5: Solve for x
    x = 331,125,381.62/20,908.20
  6. Step 6: Final answer
    x = 15,837.11

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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.