Home / 18,588.78-27,858.56-13,635.22

Finding the Fourth Proportional to 18,588.78, 27,858.56 and 13,635.22

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Solution

The fourth proportional to 18,588.78, 27,858.56 and 13,635.22 is: 20,434.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,588.78 : 27,858.56 = 13,635.22 : x
  2. Step 2: Convert to fraction form
    18,588.78/27,858.56 = 13,635.22/x
  3. Step 3: Cross multiply
    18,588.78x = 27,858.56 × 13,635.22
  4. Step 4: Simplify right side
    18,588.78x = 379,857,594.48
  5. Step 5: Solve for x
    x = 379,857,594.48/18,588.78
  6. Step 6: Final answer
    x = 20,434.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.