Home / 12,116.38-16,719.84-6,811.12

Finding the Fourth Proportional to 12,116.38, 16,719.84 and 6,811.12

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Solution

The fourth proportional to 12,116.38, 16,719.84 and 6,811.12 is: 9,398.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,116.38 : 16,719.84 = 6,811.12 : x
  2. Step 2: Convert to fraction form
    12,116.38/16,719.84 = 6,811.12/x
  3. Step 3: Cross multiply
    12,116.38x = 16,719.84 × 6,811.12
  4. Step 4: Simplify right side
    12,116.38x = 113,880,836.62
  5. Step 5: Solve for x
    x = 113,880,836.62/12,116.38
  6. Step 6: Final answer
    x = 9,398.92

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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.