Home / 11,689.34-16,129.38-6,908.62

Finding the Fourth Proportional to 11,689.34, 16,129.38 and 6,908.62

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Solution

The fourth proportional to 11,689.34, 16,129.38 and 6,908.62 is: 9,532.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,689.34 : 16,129.38 = 6,908.62 : x
  2. Step 2: Convert to fraction form
    11,689.34/16,129.38 = 6,908.62/x
  3. Step 3: Cross multiply
    11,689.34x = 16,129.38 × 6,908.62
  4. Step 4: Simplify right side
    11,689.34x = 111,431,757.26
  5. Step 5: Solve for x
    x = 111,431,757.26/11,689.34
  6. Step 6: Final answer
    x = 9,532.77

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Half scale
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Double scale
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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.