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Finding the Fourth Proportional to 11,147.95, 16,721.88 and 9,059.32

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Solution

The fourth proportional to 11,147.95, 16,721.88 and 9,059.32 is: 13,588.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,147.95 : 16,721.88 = 9,059.32 : x
  2. Step 2: Convert to fraction form
    11,147.95/16,721.88 = 9,059.32/x
  3. Step 3: Cross multiply
    11,147.95x = 16,721.88 × 9,059.32
  4. Step 4: Simplify right side
    11,147.95x = 151,488,861.92
  5. Step 5: Solve for x
    x = 151,488,861.92/11,147.95
  6. Step 6: Final answer
    x = 13,588.94

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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.