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Finding the Fourth Proportional to 18,358.91, 27,538.98 and 11,259.67

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Solution

The fourth proportional to 18,358.91, 27,538.98 and 11,259.67 is: 16,889.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,358.91 : 27,538.98 = 11,259.67 : x
  2. Step 2: Convert to fraction form
    18,358.91/27,538.98 = 11,259.67/x
  3. Step 3: Cross multiply
    18,358.91x = 27,538.98 × 11,259.67
  4. Step 4: Simplify right side
    18,358.91x = 310,079,826.94
  5. Step 5: Solve for x
    x = 310,079,826.94/18,358.91
  6. Step 6: Final answer
    x = 16,889.88

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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.