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Finding the Fourth Proportional to 18,395.58, 27,508.59 and 13,660.68

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Solution

The fourth proportional to 18,395.58, 27,508.59 and 13,660.68 is: 20,428.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,395.58 : 27,508.59 = 13,660.68 : x
  2. Step 2: Convert to fraction form
    18,395.58/27,508.59 = 13,660.68/x
  3. Step 3: Cross multiply
    18,395.58x = 27,508.59 × 13,660.68
  4. Step 4: Simplify right side
    18,395.58x = 375,786,045.24
  5. Step 5: Solve for x
    x = 375,786,045.24/18,395.58
  6. Step 6: Final answer
    x = 20,428.06

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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.