Home / 20,908.96-28,852.56-11,953.60

Finding the Fourth Proportional to 20,908.96, 28,852.56 and 11,953.60

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Solution

The fourth proportional to 20,908.96, 28,852.56 and 11,953.60 is: 16,494.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,908.96 : 28,852.56 = 11,953.60 : x
  2. Step 2: Convert to fraction form
    20,908.96/28,852.56 = 11,953.60/x
  3. Step 3: Cross multiply
    20,908.96x = 28,852.56 × 11,953.60
  4. Step 4: Simplify right side
    20,908.96x = 344,891,961.22
  5. Step 5: Solve for x
    x = 344,891,961.22/20,908.96
  6. Step 6: Final answer
    x = 16,494.94

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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.