Home / 11,682.12-16,120.81-6,646.76

Finding the Fourth Proportional to 11,682.12, 16,120.81 and 6,646.76

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Solution

The fourth proportional to 11,682.12, 16,120.81 and 6,646.76 is: 9,172.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,682.12 : 16,120.81 = 6,646.76 : x
  2. Step 2: Convert to fraction form
    11,682.12/16,120.81 = 6,646.76/x
  3. Step 3: Cross multiply
    11,682.12x = 16,120.81 × 6,646.76
  4. Step 4: Simplify right side
    11,682.12x = 107,151,155.08
  5. Step 5: Solve for x
    x = 107,151,155.08/11,682.12
  6. Step 6: Final answer
    x = 9,172.24

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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.