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Finding the Fourth Proportional to 11,687.00, 16,128.05 and 6,908.67

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Solution

The fourth proportional to 11,687.00, 16,128.05 and 6,908.67 is: 9,533.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,687.00 : 16,128.05 = 6,908.67 : x
  2. Step 2: Convert to fraction form
    11,687.00/16,128.05 = 6,908.67/x
  3. Step 3: Cross multiply
    11,687.00x = 16,128.05 × 6,908.67
  4. Step 4: Simplify right side
    11,687.00x = 111,423,298.93
  5. Step 5: Solve for x
    x = 111,423,298.93/11,687.00
  6. Step 6: Final answer
    x = 9,533.95

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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.