Home / 18,589.28-27,859.31-13,635.72

Finding the Fourth Proportional to 18,589.28, 27,859.31 and 13,635.72

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Solution

The fourth proportional to 18,589.28, 27,859.31 and 13,635.72 is: 20,435.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,589.28 : 27,859.31 = 13,635.72 : x
  2. Step 2: Convert to fraction form
    18,589.28/27,859.31 = 13,635.72/x
  3. Step 3: Cross multiply
    18,589.28x = 27,859.31 × 13,635.72
  4. Step 4: Simplify right side
    18,589.28x = 379,881,682.37
  5. Step 5: Solve for x
    x = 379,881,682.37/18,589.28
  6. Step 6: Final answer
    x = 20,435.53

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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.