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Finding the Fourth Proportional to 18,091.36, 24,978.25 and 11,295.72

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Solution

The fourth proportional to 18,091.36, 24,978.25 and 11,295.72 is: 15,595.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,091.36 : 24,978.25 = 11,295.72 : x
  2. Step 2: Convert to fraction form
    18,091.36/24,978.25 = 11,295.72/x
  3. Step 3: Cross multiply
    18,091.36x = 24,978.25 × 11,295.72
  4. Step 4: Simplify right side
    18,091.36x = 282,147,454.12
  5. Step 5: Solve for x
    x = 282,147,454.12/18,091.36
  6. Step 6: Final answer
    x = 15,595.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.