Home / 11,728.82-16,187.38-7,194.21

Finding the Fourth Proportional to 11,728.82, 16,187.38 and 7,194.21

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Solution

The fourth proportional to 11,728.82, 16,187.38 and 7,194.21 is: 9,929.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,728.82 : 16,187.38 = 7,194.21 : x
  2. Step 2: Convert to fraction form
    11,728.82/16,187.38 = 7,194.21/x
  3. Step 3: Cross multiply
    11,728.82x = 16,187.38 × 7,194.21
  4. Step 4: Simplify right side
    11,728.82x = 116,455,411.07
  5. Step 5: Solve for x
    x = 116,455,411.07/11,728.82
  6. Step 6: Final answer
    x = 9,929.00

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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.