Home / 20,205.42-27,881.47-11,253.75

Finding the Fourth Proportional to 20,205.42, 27,881.47 and 11,253.75

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Solution

The fourth proportional to 20,205.42, 27,881.47 and 11,253.75 is: 15,529.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,205.42 : 27,881.47 = 11,253.75 : x
  2. Step 2: Convert to fraction form
    20,205.42/27,881.47 = 11,253.75/x
  3. Step 3: Cross multiply
    20,205.42x = 27,881.47 × 11,253.75
  4. Step 4: Simplify right side
    20,205.42x = 313,771,093.01
  5. Step 5: Solve for x
    x = 313,771,093.01/20,205.42
  6. Step 6: Final answer
    x = 15,529.06

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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.