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Finding the Fourth Proportional to 18,498.51, 27,756.88 and 8,636.36

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Solution

The fourth proportional to 18,498.51, 27,756.88 and 8,636.36 is: 12,958.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,498.51 : 27,756.88 = 8,636.36 : x
  2. Step 2: Convert to fraction form
    18,498.51/27,756.88 = 8,636.36/x
  3. Step 3: Cross multiply
    18,498.51x = 27,756.88 × 8,636.36
  4. Step 4: Simplify right side
    18,498.51x = 239,718,247.78
  5. Step 5: Solve for x
    x = 239,718,247.78/18,498.51
  6. Step 6: Final answer
    x = 12,958.79

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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.