Home / 13,186.04-18,196.75-7,218.09

Finding the Fourth Proportional to 13,186.04, 18,196.75 and 7,218.09

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Solution

The fourth proportional to 13,186.04, 18,196.75 and 7,218.09 is: 9,960.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,186.04 : 18,196.75 = 7,218.09 : x
  2. Step 2: Convert to fraction form
    13,186.04/18,196.75 = 7,218.09/x
  3. Step 3: Cross multiply
    13,186.04x = 18,196.75 × 7,218.09
  4. Step 4: Simplify right side
    13,186.04x = 131,345,715.29
  5. Step 5: Solve for x
    x = 131,345,715.29/13,186.04
  6. Step 6: Final answer
    x = 9,960.97

Related Problems

Find fourth proportional to 6,593.02, 9,098.38 and 3,609.04
Half scale
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Double scale
Find fourth proportional to 13,187.04, 18,198.13 and 7,219.09
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.