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Finding the Fourth Proportional to 11,901.72, 16,423.73 and 6,865.64

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Solution

The fourth proportional to 11,901.72, 16,423.73 and 6,865.64 is: 9,474.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,901.72 : 16,423.73 = 6,865.64 : x
  2. Step 2: Convert to fraction form
    11,901.72/16,423.73 = 6,865.64/x
  3. Step 3: Cross multiply
    11,901.72x = 16,423.73 × 6,865.64
  4. Step 4: Simplify right side
    11,901.72x = 112,759,352.68
  5. Step 5: Solve for x
    x = 112,759,352.68/11,901.72
  6. Step 6: Final answer
    x = 9,474.21

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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.