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Finding the Fourth Proportional to 18,633.78, 27,965.25 and 11,246.58

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Solution

The fourth proportional to 18,633.78, 27,965.25 and 11,246.58 is: 16,878.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,633.78 : 27,965.25 = 11,246.58 : x
  2. Step 2: Convert to fraction form
    18,633.78/27,965.25 = 11,246.58/x
  3. Step 3: Cross multiply
    18,633.78x = 27,965.25 × 11,246.58
  4. Step 4: Simplify right side
    18,633.78x = 314,513,421.35
  5. Step 5: Solve for x
    x = 314,513,421.35/18,633.78
  6. Step 6: Final answer
    x = 16,878.67

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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.