Home / 13,186.14-18,196.29-7,218.06

Finding the Fourth Proportional to 13,186.14, 18,196.29 and 7,218.06

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Solution

The fourth proportional to 13,186.14, 18,196.29 and 7,218.06 is: 9,960.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,186.14 : 18,196.29 = 7,218.06 : x
  2. Step 2: Convert to fraction form
    13,186.14/18,196.29 = 7,218.06/x
  3. Step 3: Cross multiply
    13,186.14x = 18,196.29 × 7,218.06
  4. Step 4: Simplify right side
    13,186.14x = 131,341,913.00
  5. Step 5: Solve for x
    x = 131,341,913.00/13,186.14
  6. Step 6: Final answer
    x = 9,960.60

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Half scale
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Double scale
Find fourth proportional to 13,187.14, 18,197.67 and 7,219.06
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.