Home / 12,116.98-16,720.99-6,812.29

Finding the Fourth Proportional to 12,116.98, 16,720.99 and 6,812.29

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Solution

The fourth proportional to 12,116.98, 16,720.99 and 6,812.29 is: 9,400.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,116.98 : 16,720.99 = 6,812.29 : x
  2. Step 2: Convert to fraction form
    12,116.98/16,720.99 = 6,812.29/x
  3. Step 3: Cross multiply
    12,116.98x = 16,720.99 × 6,812.29
  4. Step 4: Simplify right side
    12,116.98x = 113,908,232.97
  5. Step 5: Solve for x
    x = 113,908,232.97/12,116.98
  6. Step 6: Final answer
    x = 9,400.71

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Half scale
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Double scale
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Similar ratio
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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.