Home / 11,678.25-16,116.34-6,643.19

Finding the Fourth Proportional to 11,678.25, 16,116.34 and 6,643.19

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Solution

The fourth proportional to 11,678.25, 16,116.34 and 6,643.19 is: 9,167.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,678.25 : 16,116.34 = 6,643.19 : x
  2. Step 2: Convert to fraction form
    11,678.25/16,116.34 = 6,643.19/x
  3. Step 3: Cross multiply
    11,678.25x = 16,116.34 × 6,643.19
  4. Step 4: Simplify right side
    11,678.25x = 107,063,908.72
  5. Step 5: Solve for x
    x = 107,063,908.72/11,678.25
  6. Step 6: Final answer
    x = 9,167.80

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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.