Home / 18,615.36-27,898.41-13,661.76

Finding the Fourth Proportional to 18,615.36, 27,898.41 and 13,661.76

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Solution

The fourth proportional to 18,615.36, 27,898.41 and 13,661.76 is: 20,474.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,615.36 : 27,898.41 = 13,661.76 : x
  2. Step 2: Convert to fraction form
    18,615.36/27,898.41 = 13,661.76/x
  3. Step 3: Cross multiply
    18,615.36x = 27,898.41 × 13,661.76
  4. Step 4: Simplify right side
    18,615.36x = 381,141,381.80
  5. Step 5: Solve for x
    x = 381,141,381.80/18,615.36
  6. Step 6: Final answer
    x = 20,474.56

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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.